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In which situation can total change be negative while births and deaths are equal?

Answer and explanation

Correct answer: There is out-migration

The correct answer is B: there is out-migration. Population change depends on natural change and migration. Natural change is calculated by subtracting deaths from births. If births and deaths are equal, natural change is zero. Total population change can still become negative when more people leave the area than enter it. Step by step: births add people, deaths remove people, in-migration adds people, and out-migration removes people. Here the first two effects cancel each other, but out-migration creates a net loss. A is wrong because high in-migration usually adds people. C is wrong because density describes people per unit area; it does not itself explain a negative total change. D is wrong because a larger area is not the same as a fall in population. Memory cue: equal births and deaths cancel; then migration decides the direction.

Related tags

Out-MigrationTotal Population ChangeNatural ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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