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If a population pyramid has a narrow base but the share of people aged 60 and above is not yet large, why may population ageing not be pronounced yet?

Answer and explanation

Correct answer: Low-birth cohorts take decades to reach older ages, so the current elderly share may remain modest

A narrow base usually indicates that recent birth cohorts are small. Those cohorts will take many decades to reach age 60, while the current number of older people mainly reflects earlier cohorts. So the elderly share can still be modest now, even though low fertility may contribute to population ageing in the future. Option A describes this time lag.

Related tags

AgeingCohort ProgressionAge StructurePopulation CompositionGeographyClass 12 Mcq

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