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If an area has low birth rate but very high immigration, what will be the main cause of population growth?

Answer and explanation

Correct answer: Net migration

Correct answer: D, net migration. Population change has two broad components: natural change and migration. Natural increase is calculated from births minus deaths, whereas net migration is immigration minus emigration. If the birth rate is low, natural increase may be small, but a large number of people entering the area can still raise its total population. Option A is not the best answer because natural increase depends on births and deaths and is not the main factor described here. Option B is wrong because a death rate removes people and does not itself cause growth. Option C is wrong because sex ratio describes the balance between males and females, not the movement of people. Option D correctly identifies immigration-led growth. Memory cue: people entering minus people leaving equals net migration.

Related tags

ImmigrationNet MigrationPopulation GrowthPopulationGeographyClass 9 Mcq

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