Podcast
Questions and Answers
What percentage of the earth's surface is covered by water?
What percentage of the earth's surface is covered by water?
- 75% (correct)
- 80%
- 65%
- 60%
Which of the following is NOT a fossil fuel?
Which of the following is NOT a fossil fuel?
- Uranium (correct)
- Natural gas
- Coal
- Petroleum
What is the main raw material for producing biogas?
What is the main raw material for producing biogas?
- Grass
- Tree leaves
- Cow dung (correct)
- Kitchen waste
Which of the following is an example of a non-renewable resource?
Which of the following is an example of a non-renewable resource?
What happens to non-renewable resources once they are used?
What happens to non-renewable resources once they are used?
What is true of primary consumers in an ecosystem?
What is true of primary consumers in an ecosystem?
What is a characteristic of renewable resources?
What is a characteristic of renewable resources?
What happens to resources that are not recycled?
What happens to resources that are not recycled?
What is a primary purpose of dam construction?
What is a primary purpose of dam construction?
What is an example of a non-renewable energy resource?
What is an example of a non-renewable energy resource?
Which organization is involved in reducing emissions from deforestation and forest degradation?
Which organization is involved in reducing emissions from deforestation and forest degradation?
Approximately how many people were on Earth in 2008?
Approximately how many people were on Earth in 2008?
Can dam construction make water toxic?
Can dam construction make water toxic?
What is a characteristic of industrialized agriculture?
What is a characteristic of industrialized agriculture?
What health hazard can high nitrate levels in water cause?
What health hazard can high nitrate levels in water cause?
What is NOT true about the Lithosphere?
What is NOT true about the Lithosphere?
What is a consequence of deforestation?
What is a consequence of deforestation?
What is a cause of water pollution?
What is a cause of water pollution?
What is a challenge posed by population growth?
What is a challenge posed by population growth?
What is the largest reserve of in India?
What is the largest reserve of in India?
What is the term for the sudden descent of a mass of soil under the force of gravity?
What is the term for the sudden descent of a mass of soil under the force of gravity?
What percentage of water is used by plants during transpiration?
What percentage of water is used by plants during transpiration?
What are the constituents of producer gas?
What are the constituents of producer gas?
What type of water is stored in the xylem of plants?
What type of water is stored in the xylem of plants?
What is the term for the removal of soil due to various natural and human-induced factors?
What is the term for the removal of soil due to various natural and human-induced factors?
What is the process by which plants release water into the atmosphere?
What is the process by which plants release water into the atmosphere?
What is the term for the sudden movement of the Earth's crust?
What is the term for the sudden movement of the Earth's crust?
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Study Notes
Non-Renewable Resources
- Non-renewable resources, once used, cannot be replaced in our lifetime.
- Examples of non-renewable resources include coal and minerals.
Renewable Resources
- Wind, vegetation, and water are examples of renewable resources.
Biogas Production
- Cow dung is a major raw material for biogas production.
Earth's Surface Covered by Water
- The earth's surface covered by water is approximately 75%.
Ecosystem
- Primary consumers are more than primary producers in an ecosystem.
Natural Resources in India
- India has the largest reserve of iron ore, after Brazil.
Landslide
- A sudden, uncontrolled descent of a mass of earth under the force of gravity is called a landslide.
Plant Water Relations
- Hydroscopic and combined water are stored in xylem tissues of plants.
- Plants use 45% of water for transpiration and 55% for evapotranspiration.
Producer Gas
- The constituents of producer gas are 45% methane and 55% CO2.
Dam Construction
- The main purpose of dam construction is for hydroelectricity, irrigation, and flood control.
Non-Renewable Energy Resource
- Coal and minerals are examples of non-renewable energy resources.
Reducing Emissions
- The United States and World Bank have started reducing emissions from deforestation and forest degradation.
World Population
- The approximate world population of humans in the year 2008 was 6.67 billion.
Dam Water Toxicity
- Dam water is not toxic.
Industrialized Agriculture
- Industrialized agriculture involves the use of commercial fertilizers and fossil fuel.
Nitrate Contamination
- A concentration of nitrates in water exceeding 45 mg/L can cause blue baby syndrome.
Lithosphere
- The lithosphere is not underlain by another layer, and it is broken into several plates.
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