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In which situation can the real cause of population change not be understood only through natural increase?

Answer and explanation

Correct answer: When the net migration effect is very strong

Direct answer: A is correct. Natural increase means births minus deaths. It tells us whether a population is increasing or decreasing through natural events, but it does not include people moving into or out of the area. Total population change can be understood as natural increase plus net migration. If the net migration effect is very strong, it may add many people to a region or remove many people from it, even when the natural increase is small or points in the opposite direction. Option B describes the information needed to calculate natural increase, so it does not show why natural increase alone is insufficient. Option C removes migration, making natural increase more useful for explaining change. Option D gives density, which is people per unit area, not the components of population change. Memory cue: natural means births and deaths; total change additionally requires migration.

Related tags

Natural IncreaseTotal Population ChangeNet MigrationMigrationProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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