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If birth rate declines but in-migration increases in an area, which conclusion is correct for total growth?

Answer and explanation

Correct answer: In-migration can maintain total growth

Answer: B, in-migration can maintain total growth. Population change is not determined by births alone. A useful basic idea is: total population change is influenced by natural change, which includes births and deaths, together with migration. If the birth rate falls, natural increase may become smaller. However, people entering the area from elsewhere through in-migration add to the population and may partly or fully offset that reduction. Option B is correct because it says migration can maintain growth, not that it must do so in every case. Option A is incorrect because it ignores migration. Option C is incorrect because the population will not always decline; enough in-migration may prevent decline. Option D is incorrect because population movement does not double the physical area. Memory cue: births and deaths are natural change; arrivals and departures are migration.

Related tags

In-MigrationBirth RateTotal Population GrowthPopulation GrowthPopulationGeographyClass 9 Mcq

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