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Why is combined study of natural increase and migration necessary in population change?

Answer and explanation

Correct answer: Because total population changes due to both effects

The correct answer is A: total population can change through both natural increase and migration. Natural increase is the difference between births and deaths. Migration is the movement of people into or out of a place. To understand total change, planners must combine these effects: births add people, deaths remove people, in-migration adds residents and out-migration removes residents. For example, a place may have more births than deaths but still grow slowly if many people leave; another place may have low natural increase but grow because many migrants arrive. B is wrong because natural increase is not migration; it is based on births and deaths. C is wrong because migration is movement, not birth. D is wrong because both directly affect population size and distribution. Memory cue: natural increase is born minus died; migration is came minus left.

Related tags

Natural IncreaseMigrationTotal Population ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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