Employability Skills IX-Unit 5 - PDF

Unit 5 Green Skills IntroductIon The environment around us affects all aspects of our life; and all our day-to-day activities also affect the...

Unit 5 Green Skills IntroductIon The environment around us affects all aspects of our life; and all our day-to-day activities also affect the environment. Those who live in cities get their food supply from surrounding villages and in turn, are dependent on forests, grasslands, rivers, seashores, for resources, such as water, fuel wood, fodder, etc. We use resources from which food is made and we depend on the community of living plants and animals, which form a web of life. Everything around us forms our environment and our lives depend on the fora and auna around us. Similarly, our school environment comprises the physical and the socio-cultural environment. The physical environment includes the school building and the classrooms, library, laboratories corridors, kitchen, toilets, garden and also the playground. The socio- cultural environment is manifested by the school, with climate teaching, by the teachers, student activities, inclusivity, attitude towards learning, social behaviour, discipline, respect for each other’s caste, religion and creed, achievement of students, etc. Unit 5.indd 163 24-08-2018 16:40:38  Over the years, with economic development, there has been an increase in environmental pollution. For example, with the advent of high input agriculture, we could grow more food by using fertilisers and pesticides and using hybrid crops, but it also resulted in the ill effects of overuse of chemicals, which led to soil and environmental degradation. This threatens the stability of the environment. We need to plan the maintenance of the areas in a sustainable manner so that we can enjoy the good environment created by us;it may be sustainable agriculture, developing eco-fashion design, manufacturing of solar panels, or designing environmentally sustainable homes. SeSSIon 1: SocIety and envIronment The Constitution People live together in villages, cities, states and of India contains countries,thus forming a ‘Society’. Society interacts specic provisions for the protection with the environment, and changes it at the same time. and improvement of The interaction of the society with the environment environmental quality. sometimes affects the ecological balance in the Article 48-A of the environment. With the increase in population and Constitution says that “the state shall economic activities, people’s interference with nature endeavour to protect has started destroying the environment. The industrial and improve the development and intensive agriculture that provides the environment and to goods for our increasingly consumer-oriented society safeguard the forests and wildlife of the uses up large amounts of natural resources, such as country.” water, minerals, petroleum products, wood, etc. Natural resources A resource can be dened as any natural or articial substance, energy or organism, which is used by human being for its welfare. Ever since the earth was inhabited, humans and other life forms have depended on things that exist freely in nature to survive. These things include water, land, soils, rocks, forests, animals, fossil fuels and minerals. They are called natural resources as they are the basis of life on earth. We use these resources to survive and also to function properly. Natural resources can be consumed directly or indirectly. For instance, humans depend directly on forests for food, biomass, health, recreation and increased living comfort. 164 Employability SkillS – ClaSS iX Unit 5.indd 164 24-08-2018 16:40:38  Indirectly forests helps in regulating climate, preventing noteS food, storm protection and nutrient cycling. The resources, which have been developed by human beings during the growth o civilisation, are called articial resources. For example, biogas, thermal electricity, plastics, etc. Natural resources come in many forms. It may be a solid, liquid or gas. It may also be organic or inorganic. It may also be metallic or non-metallic. (i) Land Resources: Human beings thus, use land as a resource for production as well as residence and recreation. It is a nite resource which is subject to agricultural and non-agricultural uses, such as infrastructure development. (ii) Forest Resources: A forest is a natural, self- sustaining community characterised by vertical structure created by presence of trees. Wood is used for making furniture, tool-handles, railway sleepers, matches, ploughs, bridges, boats, etc. and as a source of energy for cooking purpose and for keeping warm. Tannins, gums, drugs, spices, insecticides, waxes, honey, horns, musk, ivory, hides, etc. are all provided by the fora and fauna of forests. (iii) Water Resources: Water covers about three- quarters of Earth’s surface and is a necessary element for life. Water resources include rivers, lakes, oceans, and underground aquifers, etc. Water is a vital resource in agriculture, industrial, household and recreational and environmental activities. (iv) Mineral Resources: A mineral deposit is a concentration of naturally occurring solid, liquid, or gaseous material, in or on the Earth’s crust in such form and amount that its extraction and its conversion into useful materials or items are protable now or may be so in the uture. Mineral resources are non-renewable and include metals (e.g., iron, copper, and aluminium), and non-metals (e.g., salt, gypsum, clay, sand, phosphates). Some minerals consist of a single Green SkillS 165 Unit 5.indd 165 24-08-2018 16:40:38  noteS element, such as gold, silver, diamond (carbon), and sulphur. (v) Food Resources: Resources that are used as food, or provide food for organisms are called food resources. Plants serve as food resources for herbivores and omnivores. Animals and birds are the source of food for many organisms who are carnivores and omnivores. Agriculture is the main source of plant food resource for human beings. (vi) Energy Resources: An energy resource is something that can produce heat, power life, move objects, or produce electricity. There are 5 fundamental sources of energy: (i) Nuclear fusion in the Sun (solar energy), (ii) Gravity generated by the Earth and Moon, (iii) Nuclear ssion reactions, (iv) Energy in the interior of the Earth, and (v) Energy stored in chemical bonds. Most of the energy we use today come from fossil fuels (stored solar energy). But fossils fuels have a disadvantage in that they are non-renewable on a human time scale, and causes other potentially harmful effects on the environment. Natural resources fall under the following main categories: (a) Inexhaustible Resources: The resources which cannot be exhausted by human consumption are called inexhaustible resources. These include energy sources like solar radiation, wind power, water power and tidal power, etc. (b) Exhaustible Resources: There are some resources, which are available in limited quantities and are going to be exhausted as a result of continuous use. For example, the stock of coal in the earth is limited and one day there will be no more coal available for our use, if we keep on using it excessively. (c) Renewable Resources: Renewable resources are those that are constantly available (like water) or can be reasonably replaced or recovered, like vegetative lands (Table 5.1). Even though some renewable resources can 166 Employability SkillS – ClaSS iX Unit 5.indd 166 24-08-2018 16:40:38  be replaced, they may take many years to form and that does not make them renewable. Some of the exhaustible resources are naturally regenerated after consumption and are known as renewable resources. e.g., Forest trees and plants that make a forest may be destroyed but new ones grow in their place. But if forest is totally cut down to get land for construction of buildings, it is lost forever. Renewable energy systems use resources that are constantly replaced and are usually less polluting. Examples include hydropower, solar, wind, and geothermal (energy from the heat inside the earth). (d) Non-renewable Resources: Non-renewable resources are those that cannot easily be replaced once they are destroyed (Table 5.1). For example, fossil fuels. Minerals are also non-renewable because even though they form naturally in a process called the rock cycle, it can take thousands of years, making it non-renewable. Non-renewable resources can be called inorganic resources if they come from non-living things. For example, minerals, wind, land, soil and rocks. Table 5.1: Non-renewable and Renewable Resources Non-renewable Resources Renewable Resources Coal Water Coal is one of the cheapest sources of Only about 2.5 % of water on earth is fresh fuel.It is used in power houses, factories water. Energy from rivers is used to make and houses for cooking and heating. electricity. Energy produced by tides in sea and oceans can also be converted into electricity. Petroleum Sun It includes petrol, diesel and mineral Sun’s energy can be used to generate electricity. oils. It is used to run motor vehicles, These are used in calculators, street lamps, furnaces and power-houses. and even in room heaters and water heaters. Green SkillS 167 Unit 5.indd 167 24-08-2018 16:40:38  LPG Wind Liqueed petroleum gas (LPG) is made The energy from the force of the wind is wind from petroleum gas. LPG is used for energy. This energy can be used for work as cooking and also for running vehicles. grinding grain, pumping water, etc. This energy can also be converted to electricity. Natural Gas Biomass It is formed by decomposition of dead Energy can be produced by wastes from plants animals and plants that are buried under and animals. It can be used for any heating lakes and oceans. It is found above the purpose, such as cooking. It can also be used oil in the oil wells. Compressed natural to produce electricity and heat. gas (CNG) is used for running vehicles. Nuclear Plants Soil Nuclear energy is made available to us Nutrients in the soil helps plants grow. Soil with the help of nuclear power plants. is used to provide shelter. Soil quality gets Nuclear energy is becoming a common damaged due to addition to harmful chemicals, source of electricity throughout the land pollution, construction activities, and world. It has the danger of causing great cutting down of trees. harm in case of an accident. Minerals Forests The earth contains minerals like gold, Forests are necessary to preserve ecology. They bauxite, mica, iron-ore and many others. play an important role in providing clean air They are reducing as larger and deeper and attracting rain clouds. They also provide mines are being dug to obtain these the wood, fruits, and plant products which minerals. Mining these minerals causes have medicinal value. damage to the earth. Traditional societies had a small population and required less resources. They could preserve their biodiversity as a life supporting resource. But today, with the increasing consumerism and afuent societies, resources are getting rapidly depleted, even to the extent of leading to the irrecoverable loss due to extinction of several plant and animal species. Some of the human activities, which cause damage to the environment are over exploitation of resources, pollution, deforestation, mining, destruction of natural habitats, construction, etc. Let us now discuss how some of these activities are damaging our earth and environment. (i) Overexploitation: This results when harvesting of resources exceeds their reproduction or replenishment. It means that when we exploit the species faster than the natural populations can recover, then it may result in extinction of the species, thus affecting directly or indirectly 168 Employability SkillS – ClaSS iX Unit 5.indd 168 24-08-2018 16:40:38  the ecological cycle and our environment. For noteS example, removal of wild medicinal plants, excessive grazing of pastures by animals, destruction of forests, and water aquifers, overshing and over hunting, results in overexploitation of forests and natural habitats. (ii) Mining: Mines are dug below the earth’s surface to get ores. The ores are then rened to extract the valuable elements, such as metals, gems, minerals, etc. Some of the environmental impacts of mining include erosion, formation of sinkholes, loss of biodiversity, and contamination of soil, groundwater and surface water by chemicals from the mining processes. (iii) Deforestation: It is the clearance of a forest or stand of trees where the land is converted to a non- forest use, such as agriculture and construction of houses. It results in loss of habitat for many plants and animals living in the forest. It may also lead to extinction of plant and animal species. (iv) Pollution: This word is derived from the Latin word “polluere” meaning “to soil” or “dele (contaminate)”. Pollution is caused by pollutants, which may be solid, liquid or gaseous in nature. Pollution is the effect of undesirable changes in our surroundings that have harmful effects on plants, animals and human beings. Pollutants are produced due to human activity, which have a detrimental effect on our environment. For example, factories consume a lot of water and electricity and release harmful chemicals in air, land and water, thus contaminating the atmosphere. Water pollution caused by factories and other industries can be the most serious problem. They also pollute the air through fossil fuel emissions. These emissions include carbon dioxide, methane, and nitrous oxide, which are harmful to the living beings. Green SkillS 169 Unit 5.indd 169 24-08-2018 16:40:38  Pollutants are of two types, as described in Table 5.2. Table 5.2: Pollutants Pollutants that can decompose Pollutants that cannot decompose Pollutants that break down into simpler, Pollutants which cannot be broken down into harmless substances naturally (by the simpler and harmless substances are called action of moisture and bacteria) are called non-biodegradable pollutants. The harmful biodegradable pollutants effect caused by these pollutants will be there for hundreds of years. Examples: vegetable waste, sewage waste, Examples: plastics, insecticides, pesticides, paper, wood, cattle dung, agricultural waste chemicals like mercury or lead, aluminium, from organic farms, etc. glass, etc. Some of the other factors responsible for polluting the environment are as follows: Exhaust fumes released from vehicle pollutes the air. Excessive use of chemicals in agriculture (like insecticides and fertilisers) affect the alkailinity of the soil or the soil pH. It adversely affects the health of microorganisms and other organisms in the soil. Plastic waste like bottles, bags, etc., thrown on land and sea pollutes the water and destroys the fora and auna. Dangerous gases (cholorofuorocarbons or CFCs, methane, carbon dioxide, etc.) released into the air. The various types of pollution are summarised in Table 5.3. Table 5.3: Types of Pollution Land Pollution Water Pollution Air Pollution What it is? Damage to the Adding harmful Addition of harmful land because substances and gases and particles of harmful disease causing in air results in air substances is bacteria and other pollution. known as land microorganisms to pollution. rivers, lakes, and oceans results in water pollution. 170 Employability SkillS – ClaSS iX Unit 5.indd 170 24-08-2018 16:40:38  Land Pollution Water Pollution Air Pollution What happens Diseases, such Diseases, such as Heart and breathing because of this as dysentery, dysentery, diarrhoea, problems and pollution? cholera and jaundice, typhoid, etc. cancers. typhoid Local earnings, like Climate change, Less land is tourism, shing, etc. droughts, famines available for use are adversely affected. and foods of forests, farms Less drinking water or homes Why does it Cutting down Throwing waste in Burning of fuels happen? forests water Smoke rom trac Harmful Leakage from sewer Burning waste and pesticides and lines remains of crops fertilisers Release of waste water Pesticides and Mining and heavy from houses, farms fertilisers construction and factories Smoke from factories Release of Accidental oil leakage Dust from sewage, toilet from ships construction waste, waste from houses/factories, and chemical waste How to prevent Reduce waste Do not throw waste Use renewable it? Segregate into water bodies sources of energy (separate) waste Do not throw Avoid polluting products chemicals, medicines, vehicles Plant trees oils, etc., in drains Stop others from Adopt natural Avoid using pesticides burning waste and and organic and fertilisers left-over crops farming methods Ensure proper Avoid pesticides Use biodegradable treatment of sewage and fertilisers which items and factory waste release harmful Use water wisely gases If we separate all our waste before throwing it away, it will help us manage the non-biodegradable pollutants in a better manner. For example, if you keep all your vegetable waste covered in soil for some weeks, it will make the soil fertile and you will have less waste to throw away. Also harmful wastes can be separated from water before it mixes into our drinking water. Climate change Have you ever sat in a car or bus which has been parked in an open area under the sun, with windows Green SkillS 171 Unit 5.indd 171 24-08-2018 16:40:38  noteS closed for a long time? Have you felt that it is much hotter inside a closed vehicle because the heated air is blocked inside? Similarly, the earth is becoming hotter because of burning fossil fuels (coal, petrol, diesel, etc.). These gases trap and prevent the earth’s heat from escaping, leading to a global warming. This is called the “greenhouse effect”. Forests are the main mechanism for the conversion of carbon dioxide into carbon and oxygen. The loss of forest cover, coupled with the increasing release of carbon dioxide and other gases through industrialization contributes to the ‘greenhouse effect’. Some greenhouse gases occur naturally and enter the atmosphere as a result of both natural processes (such as decomposition of organic matter) and human activity (such as burning fossil fuels and agriculture). Greenhouse gases that occur both naturally and from human activities include water vapour, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and ozone (O3). Other greenhouse gases have essentially no natural sources, but are the side products of industrial processes or manufactured for human purposes, such as cleaning agents, refrigerants, and electrical insulators. These include the fuorinated gases: chlorofuorocarbons (CFCs), hydro chlorofuorocarbons (HCFCs), hydrofuorocarbons (HCFCs). This greenhouse effect causes snow to melt very fast. Carbon dioxide emissions into the atmosphere from burning oil, coal and gas for energy use is a serious problem as it is harmful to the environment. Carbon dioxide in the atmosphere has increased by 31% since pre-industrial times, causing more heat to be trapped in the lower atmosphere. As a result, there are frequent foods and changes in climate as well as damage to crops and animal life. Harmful radiation You might be knowing that the atmosphere protects us from harmful radiation from the sun. This is done by a layer all around the earth, in the atmosphere, called the ‘Ozone Layer’. It is made of a gas called ‘Ozone’. This 172 Employability SkillS – ClaSS iX Unit 5.indd 172 24-08-2018 16:40:38  layer in the atmosphere protects us from the harmful noteS radiation. Cleaning chemicals, coolants in refrigerators and air- conditioners, etc., release ozone depleting substances, such as chlorofuorocarbons in the atmosphere. These destroy the ozone in the atmosphere, making ‘holes’ in the ozone layer. The harmful radiation comes in through these ‘holes’ and cause increased incidence of health disorders, such as skin cancer. Natural disasters Natural disasters include foods, earthquakes, landslides, storms, etc. Our actions in exploiting natural resources for building structures, such as large dams and buidlings sometimes aggravates the impact of natural calamities and disasters. Saving the environment: What can you do? To save our environment, we need to educate people. Education is important, as it gives people the knowledge and skills that they need to perform. Educating people about the environment, through the environment and for the environment will enlighten them in utilizing their knowledge and skills for saving the environment as responsible citizens. (i) Learning about the environment: Learning about the environment focuses mainly on acquisition of knowledge and understanding of our surroundings and related issues. (ii) Learning through the environment: Learning through the environment refers to the processes of learning while being engaged with environment inside and outside the classroom. It focuses on learning process, such as observation, hands-on experience, learning-by-doing, problem-solving through an exposure to the environment and learning. The direct contact with the environment provides the relevant context for acquiring knowledge, skills, aesthetic appreciation and practical experience to learning. Environment damage can be minimised by developing the skills Green SkillS 173 Unit 5.indd 173 24-08-2018 16:40:38  and knowledge required or ecient resource utilisation, green processes and technologies and integrating these into our businesses and daily activities. (iii) Learning for the environment: Learning for the environment aims at the development of an informed response and responsibility towards DUCE the environment. RE USE Reduce, Reuse, Recycle There are three Rs which you can apply for saving CYCLE the environment – Reduce, Reuse and Recycle. It is a concept of the modern waste management. Reduce: Do not use what you do not need. If we reduce at source, there is a lesser chance of waste generation and the pressure on our already stretched natural resources is reduced. On an individual level we can reduce the use of unnecessary items while shopping, buy items with minimal packaging, avoid buying disposable items and also avoid asking for plastic carry bags. Use your own reusable cloth or jute bags instead of plastic bags. Reuse: Reuse the materials for other purposes, such as making pillow covers or rags out of used shirts or ladies suits. Recycling: Recycling is reusing some components of the waste that may have some economic value. Recycling has readily visible benets, such as conservation o resources reduction in energy used during manufacture and reducing pollution levels. Some materials, such as aluminum and steel can be recycled many times. Metal, paper, glass and plastics are recyclable. Plastic items are recycled into new plastic products. Kitchen wet waste can be utilised to make compost that can be used as an organic fertiliser. To do this every house should segregate the waste into wet and dry garbage. Wet garbage includes most kitchen wastes, which can be used for preparing vermicompost. Most dry garbage is recyclable. Several technological breakthroughs have recently been made to recover material from industrial waste. Non-toxic solid waste should be properly segregated and disposed o in landlls that are 174 Employability SkillS – ClaSS iX Unit 5.indd 174 24-08-2018 16:40:38  properly sealed to avoid leakage and contamination of surrounding land and groundwater. Let us now see some examples of 3 Rs (Table 5.4). Table 5.4: Examples of Reduce, Reuse and Recycle Reduce: Use less things Reuse: Use things for Recycle: Use things in new or longer time different ways Paper for each notebook Use both sides of paper Paper is recycled into making means cutting down for writing. Give your old paper again. It is also used to make of a tree. Do not leave books and notebooks to papier mache, which is a composite too much spaces, while someone who can use material consisting of paper pieces writing the text. Reduce them. In this way, you or pulp which is sometimes the wastage of paper. will promote reuse of reinforced with textiles, bound with paper. an adhesive, such as glue, starch, or wallpaper paste. Actions for saving the environment Some actions that you can take for yourself and encourage your friends, family and neighbours to take are shown in Table 5.5. Table 5.5: Actions for Saving the Environment Avoid Prefer Air pollution Burning materials, for example Using natural ventilation or fans in burning wheat or rice straw in place of airconditioners agricultural eld Energy use Leaving electrical lights or Using public transport buses and appliances on, when not required cycles (instead of cars), using solar or wind energy Water pollution Throwing waste in rivers and Using recycled water or water lakes harvested through rains for watering garden plants Waste Using plastic bags Segregating waste before throwing, so that the biodegradable waste can be harvested Chemicals in food Using chemical pesticides or Organic (natural and chemical free) fertilisers food to promote organic farming Forest Plants Over-use of paper should be Reusing paper for making paper avoided based products Water Over-use of water should be Reducing water use during bathing avoided by using water lled in a bucket instead of shower Green SkillS 175 Unit 5.indd 175 24-08-2018 16:40:39  noteS The teacher will facilitate these activities and give additional feedback and summarise for the students as needed. Activity 1 Factors infuencing the environment Materials required Pen and Notebook Procedure Form groups of three students. Based on what you learnt about the environment and how different things or actions are effecting the environment, make a list of all factors (things or actions) that affect the environment. Think about all the articles you use daily that are made from plastic and answer the following questions (a) How plastic is made? (b) What are those plastic articles you usually use? (c) What effects does plastic have on our environment? (d) How can you reduce the amount of plastic you use? (e) What happens to plastic when you throw it away? Discuss these factors in detail. One volunteer group explains their list to the rest of the class who give feedback. Activity 2 Steps you can take to save the environment Materials required Pen, Notebook Procedure Use same groups as above. Think about your day from the time you wake up until the time you sleep. In this time, what steps can you take to help save the environment? Write a note on the actions that you would take at home or at school to do the following activities: (a) Collecting waste paper and reusing what is reusable (for crafts, papiermache, making rough books, etc.) (b) Encouraging use of both sides of paper. (c) Discouraging wastage and casual use of paper, pencils, etc. (d) Proper use of notebooks and not tearing out pages. (e) Discouraging use of throw away pens and encouraging use o rellable items. (f) Making rough pads with blank sheets from old notebooks. 176 Employability SkillS – ClaSS iX Unit 5.indd 176 24-08-2018 16:40:39  Check Your Progress noteS A. Multiple choice questions Read the questions carefully and circle the letter (a), (b), (c) or (d) that best answers the question. 1. What are some of the environmental changes caused due to modern methods of agriculture? (a) Chemical pollution due to fertilisers (b) Improvement in the environment (c) Lower air pollution due to crops (d) Decrease in forest areas 2. How can we conserve our health and environment? (Choose all the correct options) (a) Grow organic crops (b) Use natural fertilisers (c) Manage waste water (d) Use more air conditioning 3. A steel actory burns rewood and charcoal or heating and melting the steel? What are the possible effects on the environment? (Choose all the correct options) (a) Increase in global temperature (b) Decrease in global temperature (c) Increase in air pollution (d) Decrease in air pollution B. Short answer questions 1. What are the ve sources o energy available to us? Give two examples of each source? 2. What are the sources of pollution? 3. Classify the following under the three respective categories of natural resources: Air, iron, sand, petroleum, wind, clay, sh, orest, gold, pearls. Inexhaustible Renewable Non- renewable What have you learnt? After completing this session, you will be able to describe the relation between society and environment. identify common environmental problems. Green SkillS 177 Unit 5.indd 177 24-08-2018 16:40:39  noteS SeSSIon 2: conServIng natural reSourceS In this session, you will learn about the actions that we can take to conserve natural resources. Conservation is the proper management of a natural resource to prevent its exploitation, destruction or degradation. Conservation is the sum total of activities, which can derive benets rom natural resources but at the same time prevent excessive use, which may lead to destruction or degradation. It means using them more eciently and less wasteully. As a rst step, we can conduct the resource audit to examine the consumption of the resources and accordingly take measures to conserve them. For example, for an energy use audit, we can examine the use of the air conditioning system, ventilation system, light system and entry of sunlight into the room or the building. We can plan energy saving measures, such as cleaning the dust from the tubelights to get more light, regular servicing and maintenance of home appliances and switching off lights and devices when not in use, etc. to conserve energy. Energy conservation also help in saving fossil fuel and money. Soil conservation Soil conservation means checking soil erosion and improving soil fertility by adopting various methods. Soil conservation can be useful for the following: 1. Maintenance of soil fertility: The fertility can be maintained by adding manure and fertilizers regularly as well as by rotation of crop. 2. Control on grazing: Grazing should be allowed only on specied areas. 3. Reforestation: Planting of trees and vegetation reduces soil erosion. 4. Terracing: Dividing a slope into several fat elds to control rapid run of water. It is practised mostly in hilly areas. 5. Contour ploughing: Ploughing at right angles to the slope allows the furrows to trap water and check soil erosion by rain water. 178 Employability SkillS – ClaSS iX Unit 5.indd 178 24-08-2018 16:40:39  Water conservation Conservation and management of water are essential for the survival of mankind, plants and animals. This can be achieved by adopting the following methods: 1. Growing vegetation in the catchment areas, which will hold water in the soil and allow it to percolate into deeper layers and contribute to formation of ground water. 2. Constructing dams and reservoirs to regulate supply o water to the elds, as well as to enable generation of hydroelectricity. 3. Sewage should be treated and only the clear water should be released into the rivers. 4. Industrial wastes (efuents) should be treated to prevent chemical and thermal pollution of fresh water. 5. Judicious use of water in our day-to-day life. 6. Rainwater harvesting should be done by storing rainwater and recharging groundwater. 7. Watershed, which is a single unit of land with its water drainage system includes soil and water management for developing vegetative cover in the area. Energy conservation We use a lot of non-renewable energy resource for our needs. Since resources are limited, we need to conserve them as much as possible. Conservation of resources or energy means saving them and using them eciently. Can you think of ways to save the natural resources? Some ideas have been given here in table 5.6. Table 5.6: Ways of Conserving Energy Switch off lights, fans, TV and other electrical items, when not in use Use tube lights and energy ecient bulbs that save energy rather than bulbs. Keep the bulbs and tubes clean. Remove dust on the tubes and bulbs to improve lighting levels by 10 to 20%. Use pressure cooker to save energy required for cooking. Keep vessels covered with a lid during cooking. It is useful in cooking the food faster and saving energy. Electric items like air conditioners geysers, heaters and dryers use a lot of electrical power. Use them when necessary. Green SkillS 179 Unit 5.indd 179 24-08-2018 16:40:39  Do not keep the door of a refrigerator open for a long time. Cool hot food before putting in the refrigerator. Use methods of cooking that use less energy, like use a pressure cooker or solar cooker to cook food. Travelling in a bus or travelling in a group in a carpool is better than going alone in a car. Do you know? Food conservation In the long-term, Food conservation and storage have been practiced to renewable energy will be feed mankind in times of shortage. Food is stored in cheaper and will cause less pollution. warehouses on large scale and in refrigerators at home. Food is also preserved through various methods to prevent the spoilage due to harmful bacteria and other microorganisms. Forest conservation Forest conservation means the retention of existing forest or the creation of new forest at the levels prescribed by the State or local authority. Participation of the community living in and around the forest is important for the success of the forest conservation programme. The teacher will facilitate these activities and give additional feedback and summarise for the students as needed. Activity 1 Conserving natural resources Material required Pen, notebook, chart paper, colours, crayons etc. Procedure Form a group with four students in each group. Make a list of all the energy or natural resources you use in a day, such as petrol or diesel for coming to school in a bus, electricity for light, etc. Then make a list of how you can reduce the amount of resources in each step. Make a poster on ‘Conserving the Environment’. Write short note on the following topics: (a) Rain water harvesting (b) Home composting (c) Garden on terrace, (d) Organic gardening (e) Drip irrigation 180 Employability SkillS – ClaSS iX Unit 5.indd 180 24-08-2018 16:40:39  Check Your Progress noteS A. Multiple choice questions Read the questions carefully and circle the letter (a), (b), (c) or (d) that best answers the question. 1. What does conservation of energy mean? (Choose all options that apply) (a) Saving energy (b) Producing energy (c) Using energy eciently (d) Creating energy sources 2. Which of the following are non-renewable resources? (Choose all options that apply) (a) Coal (b) Diesel (c) Sun (d) Water 3. Which of the following is an example of renewable resources? (a) Coal (b) Solar Energy (c) CNG (d) Petroleum B. Short answer questions 1. Write any three actions which you can take to conserve energy. 2. Describe any three methods of water conservation. 3. What is the purpose of soil conservation? 4. State any three ways by which we can save energy. What have you learnt? After completing this session, you will be able to describe methods of conservation of energy resource. differentiate between renewable and non-renewable resources. demonstrate the knowledge of conserving electricity, water, energy, etc. SeSSIon 3: SuStaInable development and green economy The current strategies of economic development are using up resources of the world so rapidly that our future generations, the young people of the world, would have Green SkillS 181 Unit 5.indd 181 24-08-2018 16:40:39  noteS serious environmental problems, much worse than those that we are facing at present. With increasing population and income, the consumption of goods is increasing day by day. This has led to increase in production and utilization of natural resources, which are required for producing goods. Society must thus change its unsustainable development strategy to a new form where development will not destroy the environment. This form of sustainable development can only be brought about if each individual practices a sustainable lifestyle. Since most of the natural resources are scarce, therefore, judicious utilisation of resource is necessary. Now let us try to understand the meaning of sustainable development. Sustainable development is dened as ‘development that meets the needs o the present without compromising the ability of future generations to meet their own needs’ (World Commission on Environment and Development, 1987). For example, sustainable agriculture consists of environment friendly methods of farming that allow the production of agricultural crops or livestock without damage to human or natural systems. It also involves preventing the use of chemicals so as to avoid adverse effects to soil, water and biodiversity. Biological diversity or biodiversity in short is that part of nature which includes the differences in genes among the individuals of a species, the variety and richness of all the plant and animal species at different scales in space, locally, in a region, in the country and the world, and various types of ecosystems, both terrestrial and aquatic, within a dened area. Biological diversity is essential for preserving ecological processes, such as xing and recycling o nutrients, soil ormation, circulation and cleansing of air and water, global life support (plants absorb CO2 , give out O2 ), maintaining the water balance within ecosystems, watershed protection, maintaining stream and river fows throughout the year, erosion control and local food reduction. What is sustainable development? Sustainability is the development that satises the needs of the present without compromising the capacity 182 Employability SkillS – ClaSS iX Unit 5.indd 182 24-08-2018 16:40:39  of future generations, guaranteeing the balance between economic growth, care for the environment and social well-being. Sustainable development is a concept that appeared or the rst time in 1987 with the publication of the Brundtland Report, warning of the negative environmental consequences of economic growth and globalisation. Sustainable development includes the following: reducing excessive use of resources and enhancing “The principle of common resource conservation. but differentiated recycling and reuse of waste materials. responsibilities is the bedrock of our enterprise scientic management o renewable resources, for a sustainable world” especially bio-resources. planting more trees. Narendra Modi Prime Minister of India green grassy patches to be interspersed between concrete buildings. using more environment friendly material or biodegradable material. use of technologies, which are environmental riendly and based on ecient use o resources. Sustainable Development Goals The Sustainable Development Goals (SDGs), otherwise known as the Global Goals, are a universal call to action to end poverty, protect the planet and ensure that all people enjoy peace and prosperity. The Sustainable Development Goals (SDGs) were launched at the United Nations Sustainable Development Summit in New York in September 2015, forming the 2030 Agenda for Sustainable Development. The 2030 Agenda for Sustainable Development and its 17 Sustainable Development Goals (SDGs) adopted by world leaders in 2015, embody a road map for progress that is sustainable and leaves no one behind. The SDGs have been framed with the objective to address vital issues facing businesses, governments and society, such as poverty, gender equality, water use, energy, climate change and biodiversity. Countries are now establishing policies and regulations that will promote sustainable systems needed in all economic sectors to provide a secure, affordable, and sustainable economy. The core Green SkillS 183 Unit 5.indd 183 24-08-2018 16:40:39  noteS skills identied as necessary or the green worker include environmental awareness and willingness to learn about sustainable development as well as general learning and decision-making ability. Green growth The concept of green growth aims at achieving economic growth that is socially inclusive and environmentally sustainable. The Ministry of Environment, Forest, and Climate Change, Government of India recognized green growth in its vision, wherein ‘poverty eradication’ along with green growth is to be seen as the focal point for green economy. The Finance Commission of India articulated green growth as involving “rethinking growth strategies with regard to their impact(s) on environmental sustainability and the environmental resources available to poor and vulnerable groups.” The extent to which its economy will “grow green” will depend on its ability to reduce the quantity of resources required over time to support economic growth that leads to enhancement of social equity and job creation. Green growth could play an important role in balancing these priorities. To ensure sustainable development, any activity that is expected to bring about economic growth must also consider its environmental impacts so that it is more consistent with long term growth and development. This means vehicles on the road which leads to trac congestion, waste of time for all the commuters, and a great load of particulate matter and carbon monoxide from the exhaust of vehicles should be slowly replaced with an ecient public transport system. Green Economy The term ‘Green Economy’ was rst coined in a 1989 report for the Government of the United Kingdom by a group of leading environmental economists, entitled Blueprint or a Green Economy. UNEP has dened the green economy as “one that results in improved human well‐being and social equity, while signicantly reducing environmental risks and ecological scarcities. 184 Employability SkillS – ClaSS iX Unit 5.indd 184 24-08-2018 16:40:39  It is low carbon, resource ecient, and socially inclusive” (UNEP, 2011). A ‘Green Economy’ is a system which helps in economic growth while at the same time, taking care of the environment as shown in Figure 5.1. Certain ways of economic growth, such as Society building factories, using chemicals for more crops, etc., harm the environment. Some ways of saving the environment, such as not using fertilisers will harm the economy of the farmers. But then, both the environment and Environment Economy economy are important for us as a society. As people begin to learn about the serious health hazards caused by pesticides in their food, public awareness can begin putting pressures Benets o All on farmers to reduce the use of chemicals that Fig. 5.1 Green Economy are injurious to health. In the longer term, as people become more conscious of using ‘green products’ made by ecosensitive industries, the products that cause severe damage to the environment may not be used. Green Consumer A green consumer is someone who is very concerned about the environment and, therefore, only purchases products that are environment-friendly or eco-friendly. Products with little or no packaging, products made from natural ingredients and products that are made without causing pollution are all examples of eco- friendly products. Components of a Green Economy A green economy includes the following components as shown in Table 5.7. Table 5.7: Components of a Green Economy Renewable energy Renewable energy from renewable resources like wind, water, sun, earth, biomass, etc., are available in large quantities and cause less pollution. India ranks amongst the top 10 countries for production of renewable energy through solar, wind and biomass. Green SkillS 185 Unit 5.indd 185 24-08-2018 16:40:39  noteS Green building Green buildings are buildings that cause minimum damage to the environment during their construction and operation. They use energy, water, and other resources wisely, with minimum waste. Well-managed Sustainable means what is good for the (Sustainable) economy as well as the future of the transport environment. A sustainable transport system will cost less, help more people to move quickly and cause less or no damage to the environment. Water management We need to avoid water pollution and not waste water. We should not waste water, rather we should recycle it for various purposes. Waste management All wastes result in loss of resources and increases land, water and air pollution. You can prevent this by separating waste before throwing. Using the 3Rs—Reduce, Reuse and Recycle will help in managing waste material. Land management Land is used for farming, forests, factories, homes, roads, etc. In a green economy, land is used in a way that it meets the requirement of people without causing damage to the environment. In other words, we can say that a green economy uses less resources, causes less pollution and provides growth for everyone. Skill development for Green Economy The key challenges for India are to expand access to food, energy, water and other essential goods and services to its growing population. It needs to work towards the objective of alleviating poverty and catalysing sustainable development. The development of skills for green jobs is crucial to ensuring an ecient transition rom 186 Employability SkillS – ClaSS iX Unit 5.indd 186 24-08-2018 16:40:40  unsustainable to a green economy by matching supply and demand for skills. A green job can be with business, nonprot organizations, government or education. Some green jobs may have specic requirements or green skills, such as organic farmer needs to have a knowledge and skills or growing organically certied crops. Solar technicians or engineers should possess the knowledge and skills for design, installation and maintenance of solar panels and appliances. Other green jobs may not necessarily require specic skills, or example a graphic designer or a cashier working for a green company or organization will be contributing to the development of green growth and economy. Green skills The skills used for promoting green economy are Green skills known as green skills. These skills are needed in areas Green skills are those similar to renewable energy, sewer water treatment, skills required to adapt climate resilient cities, green construction, solid waste processes, services management,etc. The Green Skills Agreement denes and products to skills for sustainability as “Skills for sustainability, climate change and the environmental rules also known as green skills, are the technical skills, and necessities related knowledge, values and attitudes needed in the to it. They embrace workforce to develop and support sustainable social, the information, economic and environmental outcomes in business, abilities, values and attitudes required to industry and the community.” Some of the areas live in, develop and in which green skills contribute to the sustainable support a sustainable development are as follows: and resource-ecient using renewable energy (example, using solar society. power and wind energy) water and waste management rain water harvesting conserving energy reducing pollution Green skilling is crucial for making a transition from energy and emissions — intensive economy to cleaner and greener production and service. It also prepares people for green jobs that contribute to preserving or restoring the quality of the environment, while improving human well-being and social equity. Many technologies have been developed to make use of the solar energy, Green SkillS 187 Unit 5.indd 187 24-08-2018 16:40:40  such as solar lights, solar cooker, solar water heaters, etc. The installation of the solar panels and appliances Green Consumer Day is requires engineers and technicians. celebrated on September Most vocational training programmes focus on 28 of each year. It is a day vocational or technical skills rather than ‘soft’ or when people celebrate ‘green’ skills. Green skills contribute to preserving the earth and bring about awareness on how or restoring environmental quality for sustainable small actions can help future and include jobs that protect ecosystems and earth to remain green biodiversity, reduce energy and minimise waste and and clean. People tend pollution. The National Skill Development Mission, to recycle more than usual on that day and which was ocially launched by Government o India in wear the colour green 2015 has been developed to create convergence across to express to the world sectors and States in terms of skill training activities, their feelings regarding including green skills. The knowledge and skills that the universe and mother nature. may be needed for managing resources and supporting eciency have been summarised in Table 5.8. Green skills are going to be more important in the future as all countries will move towards a greener economy. Good communication skills are also needed so that workers in different sectors can work together Table 5.8: Knowledge and skills needed for managing resources and supporting efciency S.No. Purpose Knowledge and skills needed for green economy Manage natural To assess environmental impact resources To design and adopt technologies that help in reducing the consumption of natural resources To understand legislation and guidelines for sustainable utilisation of natural resources Support climate To develop models for interpreting climate change resilience projections To develop risk management strategies for future resource availability To adopt technologies that improve resilience Support resource To develop resource ecient business models eciency To develop and adopt technologies that maximises resource utilisation and reduces waste Support low To develop technologies that promote renewable energy carbon industry sources (wind, solar, water) To design and adopt technologies and products that minimises carbon emissions 188 Employability SkillS – ClaSS iX Unit 5.indd 188 24-08-2018 16:40:40  effectively towards green solutions. In the green building noteS sector, for example, the ability to work with other trades is critical to improving a building’s energy eciency. The Ministry of Environment, Forest and Climate Change has taken up an initiative for skill development in the environment and forest sector to enable India’s youth to get gainful employment and/or self-employment, called the GREEN SKILL DEVELOPMENT PROGRAMME (GSDP). The programme endeavours to develop green skilled workers having technical knowledge and commitment to sustainable development, which will help in the attainment of the Sustainable Development Goals. Environmental change can be seen as an important factor that affects labour demand and skills supply across all sectors, such as Automotive, Retail, Electronics, Power, Construction, etc., which impacts the economy. Green Skills thus, are the skills that aim to balance economic development with environmental conservation so that the needs of the society, economy and environment are eciently met, with minimum damage to the environment. What are green jobs? A ‘green job’ is employment in any industry that contributes to preserving or restoring environmental quality in that sector and allowing for sustainable development.Itincludesjobsthathelpprotectecosystems and biodiversity and reduce energy, materials and water consumption through high eciency strategies. Green jobs can be in any sector, such as agriculture, manufacturing, research and development activities, etc. They can bring about the much needed transition from high carbon to low carbon economy by promoting environment friendly technologies. A rise in green buildings and energy eciency is increasing the demand for architects, engineers, technicians, plumbers, construction workers, etc. Some of the sectors, which have the potential for green jobs are as follows: Green SkillS 189 Unit 5.indd 189 24-08-2018 16:40:40  S.No. Sector Areas/Field Green Jobs Agriculture Organic farming Water quality technician Watershed management Rain water harvesting Rain water harvesting professionals and technician Solar pump technician Greenhouse or polyhouse professionals and technicians Construction Planning, design and Green builders manufacturing of energy Green design ecient lighting appliances and professionals equipment Green workers Increasing eciency o existing buildings through energy audits Planning, design, and construction of green buildings Green plumbing, using sensor based equipment Energy Research, construction, and Solar Cell Technicians monitoring of power plant, and Engineers including plant eciency and Wind energy carbon sequestration professionals Increased power plant eciency Wind energy workers Biofuel professionals Wave energy producers Forestry Reforestation and afforestation Natural scientists projects Agroforestry and vertical farming for better utilisation of natural resources. Manufacturing Pollution control Recyclers Energy eciency Recycling waste materials Retail Greener products and Green salesperson specically targeted green stores Accountants Cashiers Sales associates Automotive Research and design on more Clean car engineers and Transport uel ecient vehicles and on public transport systems Manufacture of alternatively fuelled vehicles 190 Employability SkillS – ClaSS iX Unit 5.indd 190 24-08-2018 16:40:40  Tourism and Eco-friendly practices, such Eco-tour guides Hospitality as centralized lighting and air Green tour guides conditioning systems for saving electricity Eco-tour guides Education Research and development Teachers teaching activities for promoting green environmental education growth and economy Green scientist Teaching environmental Conservation biologists education Research and development in conservation of natural resources Green projects Many people and organisation are concerned and motivated about doing something to save the environment. They are implementing green projects in areas like waste management, energy conservation, green sanitation, biofuel use, green buildings, etc. Examples of the green projects undertaken by some of the organisations are given in Table 5.9 to highlight the various aspects of green practices and techniques that could help us in saving our environment and making our efforts more focused for sustainable development and growth. Table 5.9: Examples of Green Projects Solid Waste Management by 'Swachh Cooperative' 'Swachh Cooperative' is wholly owned by waste pickers. The Cooperative has members who are engaged in door step collection of waste in Pune. This integrates informal waste pickers into Pune city’s Solid Waste Management system. This project has become a success with the support of government and the waste-pickers. Waste pickers now work with dignity and provide a decentralised waste management system. They ensure ecient disposal o wet waste through biogas regeneration, along with recycling of solid waste. Biogas is produced from plant material and animal waste, garbage, Green SkillS 191 Unit 5.indd 191 24-08-2018 16:40:41  waste from households and some types of industrial wastes, such as sh processing, dairies, and sewage treatment plants. It is a mixture of gases which includes methane, carbon dioxide, hydrogen sulphide and water vapour. In this mixture, methane burns easily. Modern Chulha of ‘Society of Development and Environment Protection’ Energy ecient cooking stoves or ‘chulas’ help the movement o air through it so that the wood is burnt more eciently. The Society of Development and Environment Protection developed the ‘Modern DEEP (Development and Environment Protection) Chulha’ that uses biomass to reduce consumption of wood by 50%. This chulha reduces smoke by 80%, reducing environmental and health problems. The project trains masons and welders, to produce the chulhas, thus increasing employment and entrepreneurship opportunities. The initiative was started in 35,000 households of Solan district in Himachal Pradesh in 1995. Biotoilet by ‘Green Solution Foundation’ GSF (Green Solution Foundation) has created a bio-toilet solution for hygienic sanitation in villages and slums in cities that lacked sewage systems. Users or donors fund these bio-toilets while GSF provides training on toilet use and servicing involving the local population, thus creating employment and entrepreneurship opportunities. The Bio-digester tank forms the basis for this eco-friendly toilet. Using aerobic bacteria, this tank converts human waste into environme