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Which option correctly shows the likely effect of a falling death rate on population growth?

Answer and explanation

Correct answer: Growth may increase if the birth rate is not very low

Answer: A. Natural increase is commonly understood as births minus deaths. If the death rate falls while the birth rate remains higher than, or sufficiently above, the death rate, fewer people are being subtracted from the population. The gap between births and deaths can therefore become larger, causing natural population growth to increase. Better health care, sanitation, nutrition, or disease control may contribute to lower mortality, but the exact result also depends on births and migration. A is correct because it includes the necessary condition that the birth rate is not very low. B is wrong because a falling death rate does not by itself make the population decline. C is wrong because death rates and birth rates are separate measures; one does not automatically become zero when the other falls. D is wrong because migration is a separate movement process and remains possible. Memory cue: in births minus deaths, a lower subtraction can leave a larger positive result.

Related tags

Death RateHealth ImprovementNatural IncreasePopulation GrowthPopulationGeographyClass 9 Mcq

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