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What relationship can exist between age structure and life expectancy?

Answer and explanation

Correct answer: Higher life expectancy can increase the elderly share

Life expectancy is the average number of years a person is expected to live under current mortality conditions. When it rises, more people survive into older ages and remain there for longer. This can increase the proportion of elderly people in the age structure, especially when fertility is also low. The effect is not automatic in exactly the same size everywhere, because migration and birth patterns also matter, but the relationship is demographically meaningful.

Option A is correct. Higher life expectancy does not immediately create more children; children depend mainly on births, so option B is false. It is also incorrect to say that life expectancy has no relationship with age structure, because survival at older ages directly affects that structure. Finally, older people do not become working-age adults when life expectancy rises. They simply have a greater chance of reaching and living through old age, which supports option A.

Related tags

Life ExpectancyElderly PopulationAgeingAge StructurePopulation CompositionGeographyClass 12 McqRdgdfgdfg

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