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How is net migration calculated?

Answer and explanation

Correct answer: In-migration − out-migration

The correct answer is A: net migration = in-migration − out-migration. In-migration means people entering a place, while out-migration means people leaving it. To calculate the balance, count the entrants first and subtract the leavers. If more people enter than leave, the result is positive and the place gains population through migration. If more people leave than enter, the result is negative and the place loses population through migration. Births and deaths belong to natural population change, not to the calculation of net migration. Area and rainfall are geographical factors, but they are not parts of this formula. Option A is correct because it compares movement into and out of the same area. Option B is wrong because deaths are not added to out-migration. Option C is wrong because births and area do not measure migration. Option D is wrong because rainfall has no place in the migration balance. Memory cue: “in minus out” means people in minus people out.

Related tags

Net MigrationIn-MigrationOut-MigrationPopulation ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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