The process of trapping of radiation by the earth’s atmosphere is called greenhouse effect. By this process the warming of the earth takes place. Without this process, life would not have been possible on earth. But now it threatens life.

Carbon dioxide, methane, nitrous oxide, water vapor, and CFCs are called greenhouse gases because they all contribute towards this effect.
Global warming

Carbon dioxide is one of the components of air. As the amount of carbon dioxide increase in the atmosphere due to which more greenhouse effect takes place. As a result, the average temperature of the earth’s atmosphere is gradually increasing. This is called global warming.
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