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In which condition can a falling death rate make natural increase rapid?

Answer and explanation

Correct answer: The birth rate remains high

The direct answer is B: a falling death rate can produce rapid natural increase when the birth rate remains high. Natural increase is calculated by comparing births and deaths, commonly expressed as birth rate minus death rate; migration is not included. Step by step, if many births continue while fewer people die, the positive gap between births and deaths becomes large. That large gap produces rapid natural increase. A is wrong because a very low birth rate may keep the birth-death gap small even when deaths fall. B is correct because high births combined with fewer deaths create a large positive difference. C is wrong because zero migration does not create natural increase, and zero births cannot produce rapid growth. D is wrong because high out-migration reduces actual population change and is separate from natural increase. Memory cue: natural increase depends only on the birth-death gap; migration belongs to total change.

Related tags

Death-Rate DeclineBirth RateNatural IncreaseProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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