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If 50000 people enter a region and 50000 leave it, which statement is most accurate?

Answer and explanation

Correct answer: Net migration is zero but gross migration is large

Migration can be measured in two ways. Gross migration counts movement in both directions, while net migration finds the difference between people entering and people leaving. Equal flows can therefore produce a zero net result without meaning that no movement occurred. This distinction is important when studying population change and mobility.

Here, 50,000 people enter and 50,000 leave. Net migration is \(50000-50000=0\), so migration alone does not change the population. Gross movement is \(50000+50000=100000\), showing that a large number of people moved. Therefore, option B is correct. It is incorrect to choose “no migration” because movement clearly occurred.

Related tags

Net MigrationGross MigrationMigration FlowsPopulation MovementPopulation GrowthThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And Growth

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