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Which option correctly shows zero natural increase?

Answer and explanation

Correct answer: Births and deaths are equal

Direct answer: Option A—natural increase is zero when the number of births equals the number of deaths. Natural increase measures change produced by births and deaths only, so the basic formula is births minus deaths. If a population has 1,000 births and 1,000 deaths, its natural increase is 1,000 − 1,000 = 0. The population may still change because people can move in or out, but that movement belongs to net migration, not natural increase. Option A is correct because it gives the exact condition. Option B describes zero net migration, not zero natural increase. Option C compares births with in-migration, which are unrelated quantities for this calculation. Option D compares deaths with out-migration and also does not give the births–deaths balance. Memory cue: natural increase is born minus dead; net migration is in minus out.

Related tags

Zero Natural IncreaseBirthsDeathsPopulation ProcessesProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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