1. Which country contains about 50% of the world's coal resources?
2. What is Carcinogen?
3. The Term Smog was introduced in 1905 by
4. The gas that absorbs most of the harmful ultraviolet radiation in the stratosphere:
5. Atmospheric ozone layer which protect us from UV-B and C is getting depleted most by addition of
6. Which of the following green house gases trap more heat?
7. The most abundant gas in the stratosphere is:
8. Acid rain mainly result from
9. Animals that feed only on plants are called
10. The first trophic level in a food chain
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