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A country's total population is stable even though its natural increase rate is 0.8 percent. What must the net migration rate be?

Answer and explanation

Correct answer: Negative 0.8 percent

Total population growth is the sum of natural increase and net migration. If the total population is stable, total growth is zero. A natural increase of 0.8 percent means births exceed deaths by that amount, so migration must produce an equal decrease to keep the overall population unchanged.

Set up the relation \(0.8+\text{net migration}=0\). Solving gives net migration \(=-0.8\) percent. The negative sign means net out-migration: more people leave than enter. A positive 0.8 percent would add to natural growth and make the population rise, while zero migration would leave the natural increase uncancelled. Therefore, option B is correct.

Related tags

Stable PopulationNegative MigrationNatural IncreasePopulation BalancePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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