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If a population pyramid has a narrow base and a relatively wide upper part, what type of population does it indicate?

Answer and explanation

Correct answer: Ageing population

A population pyramid shows the share of people in different age groups. Its base represents children and recent births, while the upper part represents older age groups. A narrow base means that recent births are relatively few, so the younger population is not large. If the upper part is comparatively wide, many people survive to older ages and elderly groups make up a larger share. Together, these features describe an ageing population.

Therefore, option B is correct. A youthful or high-fertility population generally has a broad base because many children are being born. The shape alone does not establish that the population consists only of migrants; migration may affect some age groups, but it is not the direct conclusion here. The key is the combination of fewer recent births and a substantial older population, which signals population ageing and may increase the need for pensions and care services.

Related tags

Narrow BaseWide TopPopulation AgeingPopulation PyramidAge StructurePopulation CompositionGeographyClass 12 Mcq

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