Which greenhouse gas contributes 20% to global warming?

Methane

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CFCs

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Solution

The correct option is C Methane
he gases responsible for green house effect are called green house gases which trap the radiations and don't let them reflect back from the earth's surface. The green house gases are Chlorofluorocarbons (CFC's), Carbon dioxide (CO₂), Methane (CH₄) and Nitrous Oxide (N₂O).
The approximate percentage of different greenhouse gases in the atmosphere is:
CFCs - 14%
CO₂ - 60%
‎CH₄ - 20%
N₂O - 6%
So, the correct answer is 'Methane'.

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