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What effect occurs when death rate declines and birth rate remains high?

Answer and explanation

Correct answer: Rapid natural increase may occur

Direct answer: A, rapid natural increase may occur. Population change has two parts: natural change and migration. Natural increase is calculated by subtracting the death rate from the birth rate: natural increase = birth rate − death rate. If the birth rate remains high while the death rate falls, more people are being born than are dying, so the difference becomes positive and possibly large. For example, if the birth rate is 30 per thousand and the death rate is 10 per thousand, natural increase is 20 per thousand. B is wrong because a high birth rate with a lower death rate does not normally cause decline. C is wrong because natural increase is zero only when birth and death rates are equal. D is wrong because actual population growth can still be measured by considering births, deaths and migration. Memory cue: high births plus low deaths means faster natural increase.

Related tags

Death RateBirth RateNatural IncreasePopulation GrowthPopulationGeographyClass 9 Mcq

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