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Why is it incomplete to understand population growth only through birth rate?

Answer and explanation

Correct answer: Because death rate and migration also change the size of the population

The direct answer is A. Population growth means the change in the number of people over a period of time. Births add people, deaths remove people, and migration changes the population when people enter or leave an area. In simple form, total change equals births minus deaths plus net migration. Thus, even if the birth rate is high, many deaths or large out-migration can reduce the final increase. Option A is correct because it includes all three important influences. Option B is wrong because births directly add to population. Option C is wrong because more deaths normally reduce population rather than increase it. Option D is wrong because migration is not zero everywhere; it differs from place to place. Memory cue: remember “births add, deaths subtract, migration can add or subtract.”

Related tags

Population GrowthBirth RateDeath RateMigrationProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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