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If the birth rate is declining in an area but a large young population exists, why can population growth continue in the near future?

Answer and explanation

Correct answer: Because the young population base affects future births

The correct answer is A. A large young population means that many people are entering or are already in the child-bearing age groups. Even when the average number of children per person is falling, the large number of potential parents can keep the total number of births high for some time. This continuing effect is called population momentum. Option A is correct because the size and age structure of the population influence the number of births, not only the birth rate. Option B is wrong because birth rate remains an important measure. Option C is wrong because death rates are not automatically zero. Option D is wrong because migration can be measured and is separate from the age-structure effect. A useful cue is: a falling rate does not immediately remove a large young base; many potential parents can sustain growth temporarily.

Related tags

Population MomentumYouth PopulationBirth RatePopulation GrowthPopulationGeographyClass 9 Mcq

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