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Questions and Answers
What is the approximate worth of environmental services provided by a typical tree?
Which of the following is NOT an ecological service provided by forests?
How do forests contribute to controlling global warming?
What role do forests play in water regulation?
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What is a consequence of forest overexploitation?
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Which of the following statements is true regarding the economic significance of forests?
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How do trees contribute to air quality based on their ecological services?
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What function of forests helps in preventing soil erosion?
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Which of the following accurately describes renewable resources?
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What is a characteristic of non-renewable resources?
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What can lead to renewable resources becoming non-renewable?
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Why is it important to conserve natural resources?
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Which of the following is an example of a renewable resource?
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What happens to a species if it is exploited beyond a critical population level?
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Which of the following is not a renewable resource?
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How should natural resources be utilized to prevent exhaustion?
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What has contributed significantly to the drought conditions in Maharashtra for the past 30 years?
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Which of the following is NOT identified as a remedial measure for drought and desertification?
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What role does the Eucalyptus tree play in Kolar district's water table issues?
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Which river has Ethiopia taken control of that contributes to water conflicts in the Middle East?
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What is a major concern for Egypt regarding the Nile River?
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Which countries are involved in fierce battles over the Jordan River water share?
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What is crucial for the effectiveness of Social Forestry and Wasteland development?
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What has contributed to the unequal distribution of water, causing conflicts?
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What is one of the main uses of Platinum?
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Which of the following minerals is primarily used in the electronic industry?
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Which non-metal mineral is utilized for neutralizing acid soils?
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Which of the following minerals is NOT associated with the production of fertilizers?
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What is a major use of Nickel?
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What is one of the main applications of Gypsum?
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Which mineral is commonly associated with car batteries?
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What is the primary use of Sand and gravel according to non-metal minerals?
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What is the primary role of ice floating on water?
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What major process sustains water cycling in the environment?
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Which geographic areas are likely to receive the most rainfall?
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What drives the hydrological cycle primarily?
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How does water influence human development?
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What percentage of the water that evaporates from oceans returns to them, according to the hydrological cycle?
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What unique properties does water exhibit that make it vital for life processes?
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Which of the following is NOT a way human beings use water?
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Study Notes
Natural Resources
- Earth's natural resources can be categorized as renewable and non-renewable.
- Renewable resources are inexhaustible and can regenerate, like wind energy, biomass energy, tidal energy, and solar energy.
- Non-renewable resources cannot be regenerated, such as fossil fuels like coal and petroleum.
- Over-exploitation of renewable resources can make them non-renewable. For instance, if a species is exploited beyond its regeneration rate, it can become endangered or extinct.
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Ecological uses of forests:
- Forests produce oxygen through photosynthesis, acting as Earth's lungs.
- Forests absorb carbon dioxide, a greenhouse gas, and play a role in mitigating global warming.
- Forests serve as habitats for millions of species, especially in tropical rainforests.
- Forests regulate the hydrological cycle by absorbing rainfall, slowing runoff, and recharging springs.
- Forests conserve soil by binding soil particles with roots, preventing erosion, and acting as windbreaks.
- Forests can absorb toxic gases and help purify the air.
- Forests can also absorb noise, reducing noise pollution.
Over-exploitation of Forests
- Growing human demands for timber, pulp, minerals, and fuel wood have led to large-scale logging, mining, road-building, and deforestation.
Water Resources
- Water is essential for all life on Earth.
- It is used for drinking, irrigation, transportation, washing, waste disposal, and industrial processes.
- Water shapes the Earth's surface and regulates climate.
Water Over-exploitation
- Over-exploitation of water resources, particularly for agriculture, can lead to droughts.
- Over-exploitation can lead to depletion of groundwater reserves.
- To mitigate the effects of drought and desertification, the text suggests using indigenous knowledge, practicing mixed cropping, and implementing social forestry and wasteland development.
Water Conflicts
- Unequal distribution of water resources can lead to inter-state and international disputes.
- Major conflicts are mentioned:
- The Nile River basin conflict: Ethiopia controls the headwaters of 80% of the Nile's flow and plans to increase its water usage, impacting downstream countries like Egypt.
- The Jordan River basin conflict: Jordan, Syria, and Israel are in a struggle for water sharing rights.
Metallic and Non-metallic Mineral Uses
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Metallic minerals:
- Iron: Used for construction, tools, and machinery.
- Aluminum: Used for packaging, construction, and aircraft materials.
- Copper: Used for electrical wiring, plumbing, and roofing.
- Gold: Used for jewelry, electrical contacts, and medical treatments.
- Silver: Used for photography, electronics, and jewelry.
- Nickel: Used in chemical industry, steel alloys, and electroplating.
- Platinum: Used in automobiles, catalysts, electronics, and medical applications.
- Manganese: Used for making high-strength, heat-resistant steel alloys, batteries, paints, and ammunition.
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Non-metallic minerals:
- Silicate minerals: Used for construction materials like sand, gravel, bricks, and paving.
- Limestone: Used for concrete, building stone, neutralizing acidic soils, and in the cement industry.
- Gypsum: Used in plaster wallboard and agriculture.
- Potash and phosphorite: Used as fertilizers.
- Sulphur pyrites: Used in medicine, car batteries, and industry.
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Description
This quiz explores the classification of Earth's natural resources into renewable and non-renewable categories. It discusses their ecological significance, such as the role of forests in oxygen production and carbon dioxide absorption. Test your knowledge on the sustainability and ecological impact of these resources.
