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Decadal growth shows growth over how many years?

Answer and explanation

Correct answer: Ten years

Direct answer: B, ten years. “Decadal” comes from “decade,” and one decade is a period of ten years. Therefore, decadal population growth compares population at two points separated by ten years or describes the increase during that ten-year period. A is wrong because five years is a half-decade, not a decade. C is wrong because twenty years contains two decades. D is wrong because one year describes annual growth, not decadal growth. In population studies, the exact dates and comparison method should be read carefully, but the time meaning of “decadal” remains ten years. Memory cue: decade = ten; therefore decadal = related to ten years. Do not confuse “annual” with “decadal”: annual means one year, while decadal means ten years.

Related tags

Decadal GrowthDecadeTen YearsPopulation GrowthPopulationGeographyClass 9 Mcq

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