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Why is methane important among atmospheric elements?

Answer and explanation

Correct answer: Because it can be a powerful greenhouse gas in small amounts

Answer: A. Methane is present in the atmosphere in a much smaller proportion than nitrogen and oxygen, but its climatic effect is important because it can absorb infrared radiation. This means that a change in methane concentration can influence the amount of heat retained in the atmosphere. Its importance is therefore related to its radiative effect, not to its abundance. B is wrong because nitrogen and oxygen are the principal gases of air. C is wrong because methane does not make all clouds solid; cloud phase depends mainly on temperature and water conditions. D is wrong because methane does not create ultraviolet radiation. A safe distinction is: concentration tells how much gas is present, while radiative efficiency helps determine how strongly it may affect climate.

Related tags

MethaneGreenhouse GasTrace GasClimate ChangeInfrared RadiationAccounting InformationIntroduction To AccountingAccountancy

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