The average atmospheric residence time is low | vedclass

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(B) Atmospheric residence time is the average time a molecule spends in the atmosphere between its emission from a source and its removal by a sink.Am

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Methane

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(B) Atmospheric residence time is the average time a molecule spends in the atmosphere between its emission from a source and its removal by a sink.Among the common greenhouse gases,$CH_4$ (Methane) has the shortest atmospheric residence time,typically estimated at approximately $12$ years.In comparison,$CO_2$ (Carbon dioxide) has a residence time ranging from $50$ to $200$ years,$N_2O$ (Nitrous oxide) is about $114$ years,and $CFCs$ (Freons) can persist for decades to centuries.

The average atmospheric residence time is lowest for which of the given greenhouse gases?

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