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In which condition can studying population change only by total number give a wrong conclusion?

Answer and explanation

Correct answer: The total number is the same but the share of children is rising

The direct answer is A. Total population tells us how many people there are, but it does not show how those people are distributed by age. A place can have the same total number while its age composition changes. If the share of children rises, the area may need more schools, vaccination, child health services, teachers, and childcare, even though the total population appears stable. A is correct because looking only at the unchanged total could hide an important change in population structure and service needs. B is wrong because unchanged total number and unchanged composition do not provide a hidden demographic change. C is wrong because if births, deaths, and migration are all absent, the stated population components are not producing a change. D is wrong because different age groups do not usually have identical service needs; the option also does not describe a misleading total. Memory cue: always examine both population size and population composition.

Related tags

Total PopulationAge CompositionService PlanningProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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