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If births are more than deaths but net migration is negative, what must be checked to find total change?

Answer and explanation

Correct answer: The balance between natural increase and negative migration

The correct answer is A. Total population change depends on both natural increase and net migration. Natural increase is calculated as births minus deaths. If births are greater than deaths, this part is positive. However, negative net migration means that more people leave than enter, so it reduces the gain produced by natural increase. The final calculation is natural increase + negative net migration, which is effectively natural increase minus the size of the migration loss. For example, if births are 500, deaths are 300, and net migration is −100, the total change is 500 − 300 − 100 = 100. Option A is correct because it asks us to compare these two opposing effects. Option B is wrong because births alone ignore deaths and migration. Option C is wrong because area does not determine the numerical population change in this formula. Option D is wrong because rainfall is not a direct component of the demographic equation. The final result may be positive, zero, or negative, depending on the values. Memory cue: natural gain can be cancelled by migration loss.

Related tags

Natural IncreaseNegative MigrationTotal Population ChangeDemographyProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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