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In which situation can natural increase be low despite a decline in death rate?

Answer and explanation

Correct answer: When the birth rate also falls rapidly

Direct answer: Option A is correct. Natural increase means the difference between the birth rate and the death rate, excluding migration. It can be written as birth rate minus death rate. A decline in the death rate does not automatically create a large natural increase. If the birth rate also falls rapidly, the gap between the two rates may remain small. For example, a birth rate of 12 per thousand and a death rate of 10 per thousand give a natural increase of only 2 per thousand. Option B is wrong because in-migration changes total population, not natural increase. Option C is wrong for the same reason: low out-migration may keep more people in the area but does not alter the birth-minus-death gap. Option D is wrong because census regularity improves measurement but does not itself change births or deaths. Memory cue: natural increase equals births minus deaths; migration is a separate balance.

Related tags

Natural IncreaseBirth RateDeath RateProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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