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Which process can show an immediate effect on a region's population?

Answer and explanation

Correct answer: Migration

Correct answer: A, migration. Migration involves people moving into or out of a region, so the number of residents can change as soon as the movement takes place. A group of workers entering a city can increase its population, while people leaving a drought-affected area can reduce the population of that area. Births and deaths also affect population, but their effect is usually recorded through demographic rates over time. Soil formation, mountain formation and river erosion are physical geographical processes. They may influence settlement and population in the long run, but they do not directly transfer people into or out of a region immediately. B is therefore not a demographic movement. C is a slow geological process, and D changes landforms rather than directly counting arrivals and departures. The memory cue is: migration means people move, so regional population can respond quickly.

Related tags

MigrationImmediate EffectRegional PopulationDemographic ProcessProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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