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If the birth rate falls from 35 to 25 per thousand and the death rate falls from 13 to 9 per thousand, how does natural increase change?

Answer and explanation

Correct answer: From 22 to 16 per thousand

Natural increase is found by subtracting the death rate from the birth rate. Since both values use the same unit, per thousand, no conversion is needed before subtraction. This calculation must be done for the original rates and again for the new rates to compare the change.

Initially, natural increase is \(35-13=22\) per thousand. After the rates change, it is \(25-9=16\) per thousand. Thus, natural increase falls from 22 to 16 per thousand, a decline of 6 per thousand. Option A is correct. Adding birth and death rates would measure neither natural increase nor natural growth, because deaths have a reducing effect on population.

Related tags

Birth Death GapNatural Increase DeclineDemographic RatesPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And GrowthGeography

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