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If an area has birth rate ten per thousand and death rate eight per thousand, what will be the natural increase rate?

Answer and explanation

Correct answer: Two per thousand

Direct answer: C, two per thousand. Natural increase measures the excess of births over deaths, so use the formula birth rate minus death rate. Here, 10 per thousand − 8 per thousand = 2 per thousand. A is wrong because it adds births and deaths; deaths reduce natural increase rather than increase it. B is only the death rate, not the difference between births and deaths. D is only the birth rate and ignores the people who die. Migration is not included in natural increase; it would be considered separately when calculating total population change. Memory cue: natural increase = B − D, where B means births and D means deaths. Keep the unit unchanged: since both given rates are per thousand, the answer is also per thousand.

Related tags

Natural Increase RateBirth RateDeath RatePer ThousandPopulation DensityPopulationGeographyClass 9 Mcq

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