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In which situation can natural increase be positive but total change become zero?

Answer and explanation

Correct answer: When out-migration equals natural increase

The direct answer is B. Natural increase is calculated as births minus deaths. It is positive when births are greater than deaths. However, actual population change also includes migration: actual change = natural increase + in-migration − out-migration. Suppose natural increase is 100 people and 100 people leave the area through out-migration, with no in-migration. The final change is 100 − 100 = 0. Option B is correct because equal out-migration exactly balances the positive natural increase. Option A would usually add people and make total change more positive, not zero. Option C makes natural increase negative, so it does not satisfy the condition. Option D gives natural increase zero, not positive. Memory cue: a positive natural increase can be cancelled by an equal net loss through migration.

Related tags

Natural IncreaseOut-MigrationTotal Population ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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