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If in-migration is rapid in a city but birth rate is low, what will be considered the main source of growth?

Answer and explanation

Correct answer: Migration-based growth

Direct answer: B is correct. In-migration means people are moving into a city from other places. These newcomers are added to the city’s population, so the city can grow even when its birth rate is low. Natural increase is calculated from births minus deaths; it cannot be the main explanation when births are low and rapid in-migration is clearly present. B is correct because it identifies movement into the city as the major source of increase. A is wrong because natural increase depends on the balance between births and deaths, not simply on arrivals. C is wrong because deaths reduce population rather than increase it. D is wrong because a larger area does not automatically create more inhabitants. Memory cue: births minus deaths is natural increase; inward movement is migration growth.

Related tags

Urban GrowthIn-MigrationNatural IncreasePopulation GrowthPopulationGeographyClass 9 Mcq

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