Explanation

The gases responsible for green-house effect are ${CO}_{2},CH_{4},N_{2}O,{CFC}_{s},$ etc. the earth’s atmosphere with high concentration of green house gases is transparent to incoming short wave solar radiations but absorbs outgoing longwave infra-red radiations, particularly earth’s thermal radiations (heat-rays), trapping heat near the earth’s surface. In this way, the earth’s atmosphere works very much like a green house by warming the interior.