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If birth rate is low but in-migration is high, why can total population increase?

Answer and explanation

Correct answer: Because in-migration adds people

Direct answer: A, because in-migration adds people to the receiving area. Total population change is affected by births, deaths, immigration or in-migration, and emigration or out-migration. Natural increase is birth rate minus death rate, but actual or total growth also includes the balance of migration. Thus, even if a place has a low birth rate and its natural increase is small or negative, a large number of newcomers can make the total population rise. B is wrong because a low birth rate still has demographic meaning and affects natural increase. C is wrong because in-migration does not require the death rate to be zero. D is wrong because the size of the land area does not itself add people. The important distinction is natural increase versus total population growth. Memory cue: people born minus people dying is natural change; people entering minus people leaving is migration change.

Related tags

In-MigrationLow Birth RateTotal GrowthPopulation GrowthPopulationGeographyClass 9 Mcq

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