what do you understand by global warming ?
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Tremendous increase in the average temperature of the earth's surface is called global warming.
It occurs due to increase in certain gases present in the atmosphere of the earth.
These gases are often referred to as the greenhouse gases.They are carbon dioxide,methane,nitrous oxide and chlorofluorocarbons.
This phenomenon is known as the greenhouse effect.
It occurs due to increase in certain gases present in the atmosphere of the earth.
These gases are often referred to as the greenhouse gases.They are carbon dioxide,methane,nitrous oxide and chlorofluorocarbons.
This phenomenon is known as the greenhouse effect.
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