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A country has a natural increase rate of 0.4 percent and a net migration rate of 0.9 percent. Which contributes more to total growth?

Answer and explanation

Correct answer: Net migration

Total population growth can be separated into natural increase and net migration. Natural increase reflects births minus deaths, while net migration reflects inflows minus outflows. When both rates are stated for the same population and period, their contributions can be added to find total growth.

Here, total growth is \(0.4\%+0.9\%=1.3\%\). Net migration contributes 0.9 percentage points, which is greater than the 0.4 percentage points contributed by natural increase. Therefore, net migration makes the larger contribution, so option B is correct. This does not mean natural increase contributes nothing.

Related tags

Migration Driven GrowthNatural IncreaseTotal Growth RatePopulation ComponentsPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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