A) The major contribution in greenhouse gases is of\[C{{H}_{4}}\].
B) Global warming is because of ozone depletion.
C) When organic waste enters into a water body its BOD increases.
D) All of the above
Correct Answer: C
Solution :
[c] The major contribution in green houses is water vapour, carbon dioxide, methane, nitrous oxide, ozone, and any fluorocarbons. Global warming is because of green-house gases. Global warming is a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, \[C{{H}_{4}}\], and other pollutants.
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