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In which condition can total population increase even when natural increase is zero?

Answer and explanation

Correct answer: In-migration is more than out-migration

Direct answer: B, when in-migration is greater than out-migration. Natural increase means births minus deaths. If births and deaths are equal, natural increase is zero. However, total population also changes through migration. People entering an area are added, while people leaving are subtracted. Thus, if 500 people enter and 300 leave, net migration is +200, so the population rises even though births equal deaths. A is wrong because fewer births than deaths create negative natural increase. C would reduce the population through migration. D is not a demographic condition and gives no valid conclusion. Remember: actual population growth = natural increase + net migration; net migration = in-migration − out-migration. A positive migration balance can therefore produce population growth.

Related tags

Natural IncreaseNet MigrationPopulation GrowthProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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