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In which situation can population increase even when the birth rate declines?

Answer and explanation

Correct answer: The death rate is very low and in-migration is high

Direct answer: A. A declining birth rate does not automatically mean that the total population must decline. Total population depends on births, deaths, and migration together. If the death rate is very low, many people remain alive, and if in-migration is high, additional people enter the area. These effects can be large enough for the total population to increase even though the birth rate has fallen. Option A is correct. Option B is wrong because deaths greater than births reduce natural increase, while out-migration removes people. Option C is wrong because everyone leaving would reduce the population. Option D is wrong because zero births and zero in-migration provide no additions; without other information, this does not describe population increase. Memory cue: never judge population from birth rate alone; check deaths and migration too.

Related tags

Birth RateDeath RateIn-MigrationPopulation GrowthPopulationGeographyClass 9 Mcq

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