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In which condition will urban population growth be called mainly migration-based rather than natural?

Answer and explanation

Correct answer: In-migration is high and the birth-death gap is small

The direct answer is B. Population can grow through natural increase or through migration. Natural increase occurs when births exceed deaths, while migration-based growth occurs when the main addition comes from people moving into the area. In option B, in-migration is high and the birth-death gap is small, so newcomers—not births—are the principal source of urban growth. A is wrong because births far exceeding deaths indicate strong natural increase, and no migration is present. B is correct because it identifies migration as the dominant adding component. C is wrong because high deaths and no in-migration are more likely to reduce the population. D is wrong because zero births and deaths create no natural increase; without migration, there is no stated source of growth either. A useful warning is that urban growth may have both components, but it is called mainly migration-based when migration contributes the larger share.

Related tags

Migration-Based GrowthUrban PopulationIn-MigrationProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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