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Which process can reduce an area's population because people leave?

Answer and explanation

Correct answer: Out-migration

Direct answer: Option B, out-migration. Out-migration occurs when people leave a particular area to live in another place. Their departure removes them from the population of the original area, so out-migration can reduce that area's population. Option A is wrong because births add people to the local population. Option B is correct because it names the movement away from the area described in the question. Option C is wrong because in-migration means people enter the area and can increase its population. Option D is wrong because rainfall is a physical element of climate, not a process in which people leave. The word “out” is the key clue: it indicates movement away from the place being studied. The final population may also be affected by births, deaths, and arrivals, but the specific process of people leaving is out-migration.

Related tags

Out-MigrationPopulation DecreaseMigrationPopulation ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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