Global warming means the rise in the temperature of earth’s atmosphere. This happens due to emission of gases from industry, fossils, fuels, agriculture and other human activity.
The gases so formed are known as greenhouse gases. Greenhouse gases consist of carbon dioxide,methane and nitrous oxide. These gases stay in the atmosphere and stop the heat of the earth from dissipating, with the result the temperature of the earth rises.
Some people argue that this is just a normal phenomenon by which the organisms are cleansed.
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