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Which factor can change the total population of a region even without changing births or deaths?

Answer and explanation

Correct answer: Migration

A region’s total population changes through births, deaths, and migration. Migration means people entering or leaving the region. Therefore, even if the number of births and deaths stays exactly the same, an inflow can increase the population and an outflow can reduce it. This is why migration is a demographic component separate from natural change, which is calculated from births minus deaths.

Option A is correct. Soil fertility, rainfall, and altitude may influence where people live or how attractive a place is, but they do not directly add or remove people from the region in the demographic accounting sense. The question asks specifically what can change the total without changing births or deaths, so the movement of people across the region’s boundary is the clear answer.

Related tags

MigrationPopulation ChangeIn MigrationOut MigrationDemographyPopulation GrowthThe World Population – DistributionDensity And Growth

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