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In which situation can total population decline even when net migration is positive?

Answer and explanation

Correct answer: When deaths are much more than births and in-migration is small

Direct answer: B is correct. Total population change has two broad parts: natural change, which is births minus deaths, and net migration, which is in-migration minus out-migration. A positive net migration adds people, but it may be smaller than the natural decrease caused by deaths greatly exceeding births. For example, if natural change is −100 and net migration is +40, the total change is −60, so the population declines. Option A would create positive natural increase and does not support decline by itself. Option C gives zero natural change, so positive net migration would normally raise the total. Option D means out-migration is zero; unless other conditions are unusual, it does not explain a decline when migration is positive. Memory cue: add the signed values—positive migration can be outweighed by a larger negative natural change.

Related tags

Positive Net MigrationNatural DecreaseTotal Population ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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