1. More solar radiation is received at the:
2. In the northern hemisphere, a solar panel should be placed on the side of the roof facing:
3. Nitrogen fixing blue green algae is
4. Area X represents
5. A renewable source of energy is
6. Man made sources of radiation pollution are:
7. Renewable energy resources are mostly based on
8. __________ was developed after World War II.
9. The term "Nuclear winter" is associated with
10. Which of the following group of gases cause photochemical smog?
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