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If a country's birth rate falls from 14 to 12 per thousand while the death rate remains 6 per thousand, by how much does the natural increase rate change?

Answer and explanation

Correct answer: Decrease of 2 per thousand

Answer: A. Natural increase is calculated by subtracting the death rate from the birth rate. Initially, it is 14 − 6 = 8 per thousand. After the birth rate falls, it becomes 12 − 6 = 6 per thousand. The change is 6 − 8 = −2 per thousand, so the natural increase decreases by 2 per thousand. A is correct because the result is a fall of two units. B is wrong because 6 is the unchanged death rate, not the amount of change. C has the wrong direction: a lower birth rate with the same death rate cannot increase natural growth. D is wrong because the birth rate has changed and therefore the difference has changed. The safest method is to calculate the natural increase twice and compare the two results. Memory cue: if deaths stay constant, a fall in births reduces natural increase by exactly the same amount.

Related tags

Natural IncreaseBirth Rate ChangeDeath RatePopulation CalculationPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And GrowthGeography

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