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In which situation can total births remain high even when birth rate falls?

Answer and explanation

Correct answer: When the reproductive-age group is very large

Direct answer: A—when the reproductive-age group is very large. Birth rate is a rate or proportion, whereas total births are an actual count. They are related, but they are not identical. Step by step, first consider the size of the group that can have children. If this group is very large, even a lower average birth rate can produce many births because the rate is applied to a large base. For example, a small number of births per person across a very large reproductive-age population may still give a high total. A is correct because it explains how the total can remain high during a falling rate. B is wrong because no young or reproductive-age population would generally mean fewer births. C is not a meaningful demographic condition and cannot explain high births. D is wrong because stopping migration does not determine the number of births. Memory cue: always distinguish a rate from the total number to which the rate is applied.

Related tags

Birth RateTotal BirthsAge StructureProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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