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Why can forecasting population growth be difficult?

Answer and explanation

Correct answer: Because births, deaths, migration and policies change over time

The correct answer is A. A population forecast is an estimate of how many people may live in a place in the future. To make it, demographers study the present population, birth rates, death rates and migration. The difficulty is that these factors can change. Families may choose to have fewer or more children, medical improvements may change death rates, and people may move because of jobs, education, disasters or conflict. Government policies and economic conditions can also influence these decisions. Thus, a forecast is based on available evidence and assumptions; it is not a fixed promise. Option A is correct because it identifies the main changing components. Option B is false because population changes continuously through births, deaths and migration. Option C is false because family sizes differ between households and regions. Option D is false because migration patterns vary from place to place and from one period to another. Memory cue: forecast equals estimate, not certainty; check births, deaths and migration before judging it.

Related tags

Population ForecastingDemographic ChangeMigrationPopulation GrowthPopulationGeographyClass 9 Mcq

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