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In which situation can total population remain stable?

Answer and explanation

Correct answer: Births and in-migration together equal deaths and out-migration

Direct answer: Option A. Population remains stable when the number of people added equals the number of people removed. People are added through births and in-migration. People are removed through deaths and out-migration. Therefore, the condition for no overall change is births + in-migration = deaths + out-migration. Option A states exactly this balance, so the total population can remain unchanged. Option B would usually cause population growth because births exceed deaths, unless some large out-migration exactly balances it; that balance is not stated. Option C adds many people and therefore tends to increase population. Option D removes people and therefore tends to decrease population. The word “stable” refers to total balance, not to zero births or zero movement. Memory cue: stable population means additions equal removals.

Related tags

Stable PopulationPopulation BalanceMigrationBirths And DeathsPopulation GrowthPopulationGeographyClass 9 Mcq

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