Natural Resources-Important Questions

1.   Name two chemicals that are depleting ozone layer.

2.   Name the types of soil.

3.   State 3 methods by which free nitrogen can be converted into nitrates.

4.   What is De nitrification?

5.   How do fossil fuels cause air pollution?

6.   In spite of breathing out carbon dioxide in a large amount and released by combsuion, the atmosphere has mere fraction of CO₂ only. Why?

7.   What is water pollution? Give its causes and harmful effects?

8.   State in brief the role of photosynthesis and respiration in carbon cycle in nature.

9.   What is the difference between smog and fog. Give two examples effecrs of smog.

10.   Explain carbon cycle.