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What is the main benefit of expressing population growth rate annually?

Answer and explanation

Correct answer: Comparison of different time periods becomes easier

Correct answer: A. An annual growth rate expresses population change using one common time unit: one year. This makes the average pace of change easier to compare. For example, a population increase measured over two years and another increase measured over five years cannot be judged fairly by looking only at the total increase, because the periods have different lengths. Expressing both as annual rates helps show how much change occurs per year. A is correct because it standardises the time basis. B is wrong because an annual rate does not calculate land area. C is wrong because births and deaths remain important data used in population analysis. D is wrong because changing the time unit does not stop migration. Memory cue: annual rate means “per year”; it improves comparison, not the physical conditions being measured.

Related tags

Annual Growth RateTime PeriodComparisonPopulation StatisticsPopulation GrowthPopulationGeographyClass 9 Mcq

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