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Why is it necessary to measure net migration separately in population change?

Answer and explanation

Correct answer: Because it clarifies regional gain or loss

Direct answer: C is correct. Net migration is the difference between the number of people entering a region and the number leaving it during a specified period. A positive value means that migration adds more people than it removes; a negative value means that more people leave than enter. Measuring it separately helps us see whether a region gains or loses population because of movement, even when its births and deaths show a different pattern. Option A is wrong because births are counted separately and are part of natural increase. Option B is wrong because death rate measures deaths, not movement. Option D is wrong because area is a physical measure, whereas net migration measures the balance of people moving. Memory cue: net migration = in-migration − out-migration; it explains movement-related regional gain or loss.

Related tags

Net MigrationRegional GainRegional LossPopulation ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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