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If growth rate is constant but base population increases every decade, how can absolute growth change?

Answer and explanation

Correct answer: Absolute growth may increase

Answer: A, absolute growth may increase. Absolute growth means the actual number of people added, whereas growth rate is the percentage added to the starting population. Use the relation: absolute increase = rate × base population. If the rate is 10%, 10% of 100 people is 10, but 10% of 1,000 people is 100. Thus, the percentage can remain unchanged while the numerical addition becomes larger as the base becomes larger. A is correct because it describes this possibility. B is wrong because a positive rate does not produce zero addition. C is wrong because absolute growth can be measured by subtracting the initial population from the final population. D is wrong because absolute growth is not the birth rate; it is affected by births, deaths and migration. Memory cue: same percentage plus a bigger base means more people.

Related tags

Population GrowthAbsolute GrowthBase EffectPopulationGeographyClass 9 Mcq

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