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If births are more than deaths and in-migration equals out-migration, what will mainly determine the total population change?

Answer and explanation

Correct answer: By natural increase

Answer: C, natural increase. Population change has two main parts: natural increase and net migration. Natural increase is calculated as births minus deaths. Net migration is calculated as in-migration minus out-migration. Here, births are greater than deaths, so natural increase is positive. However, in-migration and out-migration are equal, so the number entering is exactly balanced by the number leaving; therefore, net migration is zero. Thus, the total change is mainly decided by the difference between births and deaths. A is incorrect because equal inward and outward migration produces no net migration. B is incorrect because area affects density, not the number added in this calculation. D is incorrect because rainfall is not one of the given components. Memory cue: total change = births − deaths + in-migration − out-migration.

Related tags

Natural IncreaseNet MigrationPopulation ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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