Answers

2016-04-30T08:05:24+05:30
Carbon dioxide creates green house effect in the atmosphere.
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2016-04-30T08:25:36+05:30
Carbon dioxide (CO2), methane etc are the gas which creates green house effect in the atmosphere.  these gases traps the heat in the atmosphere and that results in uneven heating of earth, and eventually global warming. they are released by factories, vehicles etc.
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