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When the number of people in an area decreases, what can it be called?

Answer and explanation

Correct answer: Population decline

Correct answer: B, population decline. Population decline means that the number of people living in a particular area becomes smaller over a specified period. This can result from more deaths than births, more people leaving than entering, or a combination of demographic and migration factors. The question asks about a decrease in the number of people, so “decline” is the appropriate word. Option A is wrong because population growth generally refers to an increase or change that raises population size. Option B is correct because decline means decrease. Option C is wrong because population density measures people per unit of area; it may change even when total population does not, if the area changes. Option D is wrong because sex ratio compares the numbers of females and males. Memory cue: decline means down; density means people per area; sex ratio means comparison of sexes.

Related tags

Population DeclinePopulation ChangePopulation DensitySex RatioPopulation GrowthPopulationGeographyClass 9 Mcq

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