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What is the simple formula of natural increase?

Answer and explanation

Correct answer: Natural increase = Births − Deaths

Direct answer: A, natural increase = births − deaths. Natural increase describes the change produced by the balance between births and deaths, without adding or subtracting migration. To use the formula, first identify the number of births during the same period, then identify the number of deaths, and subtract deaths from births. For example, 800 births minus 500 deaths gives a natural increase of 300 people. Option A is correct because it contains the two relevant demographic events and the correct order of subtraction. Option B is wrong because rainfall and temperature describe physical conditions, not population events. Option C is wrong because rivers and mountains are landforms and cannot be used in a population formula. Option D is wrong because language and food have no arithmetic relationship with natural increase. A useful warning is that total population change may also include migration, but natural increase itself does not.

Related tags

Natural IncreaseFormulaBirthsDeathsPopulation GrowthPopulationGeographyClass 9 Mcq

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