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Natural increase is related to what?

Answer and explanation

Correct answer: The difference between births and deaths

Direct answer: Option A, the difference between births and deaths. Natural increase measures population change caused by biological events within a population. The basic relationship is: natural increase = number of births − number of deaths. For example, if a population has more births than deaths during a period, its natural increase is positive. If deaths exceed births, the natural increase is negative. Migration is not included in this measure, although migration can change the total population. Option B is wrong because mountain height describes relief, not demographic change. Option C is wrong because river speed describes flowing water. Option D is wrong because soil colour is a physical property of soil. Do not confuse natural increase with total population growth: total growth may also include people entering or leaving an area. Memory cue: births minus deaths = natural increase.

Related tags

Natural IncreaseBirth Death DifferencePopulation GrowthPopulationGeographyClass 9 Mcq

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