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If in-migration and out-migration are equal, but births exceed deaths, what will mainly decide the total population change?

Answer and explanation

Correct answer: By natural increase

The direct answer is option B, natural increase. Population change can be understood by comparing two broad parts: natural change and migration change. Natural increase means the number of births minus the number of deaths. Net migration means in-migration minus out-migration. Here, in-migration and out-migration are equal, so their difference is zero and migration does not add to or subtract from the total. Births, however, are greater than deaths, so births minus deaths is positive. Therefore, the population mainly increases because of natural increase. Option A is incorrect because net migration is zero, not positive. Option C is incorrect because area affects density, but it does not itself add people. Option D is incorrect because rainfall is not one of the direct components in this calculation. Memory cue: total change = natural increase + net migration.

Related tags

Natural IncreaseNet MigrationPopulation ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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