What's is Global warming?
the increase in the earth's average temperature is referred to as global warming. Gases in the earth's atmosphere such as methane and carbon dioxide trap heat and light from the sun. These gases are called greenhouse gases. This trapped heat increase the over all temperature of the earth. this process by which heat is absorbed by atmospheric greenhouse gases and re-emitted back towards earth earth is called the greenhouse effect.
The earth's natural greenhouse effect has been giving enough heat to meet the needs of all living forms on earth.