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Which option gives the correct pair?

Answer and explanation

Correct answer: Birth increases population

Direct answer: A, birth increases population. A population changes according to whether a process adds people or removes them. Each birth introduces a new member into the counted population, so births increase it. A death removes a member, making B false. Out-migration means people leave the area; therefore it generally reduces the population of the place they leave, making C false. In-migration means people enter and settle in an area, so it generally increases that area’s population, not decreases it; therefore D is false. The word “generally” matters because the final population also depends on all other processes occurring during the same period. Memory cue: births and in-migration add; deaths and out-migration subtract.

Related tags

Processes Of Population ChangePopulationGeographyClass 9 Mcq

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