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A country has zero total growth but natural increase is negative 0.6 percent. What must the net migration rate be?

Answer and explanation

Correct answer: Positive 0.6 percent

The total growth rate is obtained by adding natural increase and net migration. Here total growth is zero, while natural increase is negative 0.6 percent. The negative natural rate means that deaths exceed births by 0.6 percent of the relevant population. For the final total to remain unchanged, migration must provide an equal positive offset.

Write the relationship as 0 = −0.6 + net migration. Adding 0.6 to both sides gives net migration = +0.6 percent. Therefore, option B is correct. This positive value means immigration exceeds emigration by 0.6 percent, exactly balancing the natural decrease. A negative migration rate would make the population fall further, while zero migration would leave total growth at negative 0.6 percent.

Related tags

Zero GrowthPositive MigrationNatural DecreasePopulation BalancePopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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