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14. Acid rain is mainly a problem of:
A. The developed world
B. The underdeveloped world
C. The developing countries
D. None of the above

15. Which gas is released from plants?
A. Methane
B. Carbon dioxide
C. Oxygen
D. All of the above

16. Which of the following is not a major effect of open-cast mining?
A. Oil pollution
B. Waste rocks
C. Air pollution
D. Water pollution

17. What is biofuel?
A. Fuel from crops
B. Fuel from renewable energy
C. Biogas
D. Fuel from waste

18. Which of the following agricultural production systems is sustainable?
A. Cattle ranching
B. Plantations
C. Shifting cultivation
D. All of the above

19. What is the most environmentally friendly action for a mining company after extraction of minerals?
A. Fill the mined-out pits
B. Storing topsoil and using it during reclamation
C. Fill the mined-out pits with water
D. Leaving mined-out pits unattended

20. Which strategy is best suited for reducing greenhouse gases?
A. Tree plantation and alternative sources of energy
B. Use of renewable energy
C. Sustainable use of resources
D. Less emissions of carbon dioxide

21. Global warming causes major changes in:
A. In precipitation
B. Flora and fauna
C. Weather patterns
D. Atmospheric systems

22. Which is a major carbon sink?
A. Forests
B. Atmosphere
C. Biosphere
D. Animals

Answer :

Final answer:

The questions revolve around environmental concepts such as acid rain, biofuels, and the impacts of mining. Understanding these topics is essential for identifying sustainable practices and the effects of human activity on the environment. Key themes include greenhouse gas emissions and ecological impact.


Explanation:

Answer to the Questions


The questions provided touch on various environmental issues and concepts related to geography and ecology. Below are detailed answers:




  1. 14. Acid rain is mainly a problem of:

    • A. The developed world - This is correct, as acid rain is primarily a result of industrialization, which is prevalent in developed countries due to high levels of emissions from factories and vehicles.



  2. 15. Which gas is released from plants?

    • C. Oxygen - Plants release oxygen during the process of photosynthesis, which is detrimental to life on Earth.



  3. 16. Which of the following is not a major effect of open cast mining?

    • A. Oil pollution - Oil pollution is typically associated with oil spills, not with open cast mining.



  4. 17. What is biofuel?

    • A. Fuel from crops - Biofuels are derived from organic materials, primarily crops, making this option correct.



  5. 18. Which of the following agricultural production systems is sustainable?

    • C. Shifting cultivation - This method tends to be more sustainable compared to extensive cattle ranching or large plantations, as it allows for land recovery.



  6. 19. What is the most environmentally friendly action for a mining company after extraction of minerals?

    • B. Storing top soil and using it during reclamation - This practice helps in restoring the ecological balance post-mining.



  7. 20. Which strategy is best suited for reducing greenhouse gases?

    • A. Tree plantation and alternative sources of energy - Both of these approaches significantly help in lowering carbon emissions.



  8. 21. Global warming causes major changes in:

    • C. Weather patterns - Global warming is primarily responsible for altering weather patterns globally.



  9. 22. Which is a major carbon sink?

    • A. Forests - Forests act as major carbon sinks, absorbing significant amounts of CO2 from the atmosphere.




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