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Why is the study of trace gases in the atmosphere necessary?

Answer and explanation

Correct answer: Because even in small quantities they affect radiation, chemistry and pollution

Correct answer: D. A trace gas is present in a relatively small concentration, but small quantity does not mean zero importance. Such gases can absorb or emit particular wavelengths of radiation, take part in atmospheric chemical reactions and influence air quality. For example, ozone has important radiative and chemical roles, while some other trace gases affect warming or pollution chemistry. Their effects depend on their properties, not simply on how much of them exists. A is wrong because trace gases can have strong effects despite low concentration. B is unrelated: atmospheric gases do not merely change Earth’s shape. C is false because trace gases do not all disappear permanently. The useful warning is: concentration and importance are different ideas.

Related tags

Trace GasesAtmospheric ChemistryRadiationPollutionImportant TerminologyBills Of ExchangeAccountancyClass 11 Mcq

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