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Which process can reduce the number of population?

Answer and explanation

Correct answer: Deaths

Direct answer: Option A, deaths. Deaths reduce the number of people in a population because a person who dies is no longer counted among the living population. This is a basic decrease process. Option B is wrong because births add people and normally increase population. Option C is wrong because in-migration means people enter an area from elsewhere, increasing the receiving population. Option D is wrong because natural increase means births minus deaths; when it is positive, it represents growth rather than reduction. The word “can” is important: deaths reduce population directly, although the overall population of a place may still rise if births or in-migration are larger. Thus Option A is the clear process asked for. Memory cue: deaths and out-migration take numbers away; births and in-migration bring numbers in.

Related tags

DeathsPopulation DecreaseMortalityProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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