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What does net migration show in population change?

Answer and explanation

Correct answer: The difference between in-migration and out-migration

Correct answer: A, the difference between in-migration and out-migration. In-migration counts people entering a region, and out-migration counts people leaving it. Net migration is found by subtracting the number leaving from the number entering: net migration = in-migration − out-migration. A positive result means more people entered than left; a negative result means more people left than entered; and zero means the two numbers were equal. B is incorrect because births and deaths describe natural change, not migration. C is incorrect because area and population density are geographical measurements and are not used to define net migration. D is incorrect because rainfall and temperature are climate elements. Thus, A correctly identifies the population process being measured. A useful memory cue is “in minus out”: count those coming in, then subtract those going out.

Related tags

Net MigrationMigration DifferencePopulation ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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