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Which are the three main processes of population change?

Answer and explanation

Correct answer: Birth, death and migration

Direct answer: Option B is correct. Population change is studied through three basic processes: birth, death and migration. A birth adds a person to the population. A death removes a person from the population. Migration is the movement of people from one place to another; in-migration adds people to the receiving area, while out-migration removes people from the area they leave. Option A lists weather elements, which may influence human life but are not the three population-change processes. Option C lists physical features, not demographic processes. Option D lists cultural or social features, not direct measures of population change. Memory cue: B-D-M means births, deaths and migration; when studying a population, ask who is born, who dies and who moves.

Related tags

BirthDeathMigrationPopulation ChangeGeographyProcesses Of Population ChangePopulationClass 9 Mcq

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