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Why is deep analysis of population growth incomplete by using only birth rate?

Answer and explanation

Correct answer: Because death rate, migration, base population and time period also affect it

Answer: A. Birth rate is important, but it is only one indicator. Natural increase depends on both births and deaths, not births alone. Total population change also includes migration: people entering add to the population, while people leaving subtract from it. The base population is needed to interpret a percentage rate, because the same rate can represent different numbers in different-sized populations. The time period is also essential because a rate over one year is not the same as a change over several years. A is correct because it includes all these necessary considerations. B is wrong because birth rate clearly relates to population change. C is wrong because area alone does not determine growth. D is wrong because migration may be positive, negative or zero. Memory cue: never interpret one indicator without its context.

Related tags

Birth RateDeath RateMigrationPopulation GrowthPopulationGeographyClass 9 Mcq

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