Given diagram represents the greenhouse effect [image:16_image3.png] I. Greenhouse gases absorb infrared radiation from the earth. The absorbed radiations again come to earth’s surface and heat it up II. $CO_{2},CH_{4},\ CFCs$ and$\ N_{2}O$ are the gases which are responsible for greenhouse effect III. Increase in the level of greenhouse gases results considerable heating of earth leading to global warming Which of the statement given above are correct?

Question

Dr. Abubacker · Accepted Answer

The atmosphere cover around the earth acts like glass walls of a greenhouse. It absorbs much of the incoming solar radiation from the sun and re-radiates to the earth’s surface However, it prevents the long wave infrared radiation emitted by the earth’s surface to escape into the space Thus, the atmosphere acts a greenhouse, trapping the heat. The gases in the atmosphere most responsible for keeping the earth’s surface warm are $CO_{2},CH_{4},\ CFCs\$and$\ N_{2}O$ and water vapours The increase in mean global temperature due to increased concentrations of greenhouse gases is called global warming. A recent survey has revealed 60%, 20%, 14% and 6% of warming effect of $CO_{2},CH_{4},\ CFCs$ and $N_{2}O$ respectively

Explanation

Reviewed by Dr. Abubacker

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