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Which is the correct formula idea for total population growth?

Answer and explanation

Correct answer: Growth = Births − Deaths + Net Migration

Direct answer: A. Population growth is affected by natural change and migration. Natural increase is calculated as births minus deaths. Net migration is then added because people entering or leaving also change the population: total growth = births − deaths + net migration. If net migration is negative, it reduces the result. Option A is correct because it includes all three relevant components. Option B is wrong because area and density describe spatial conditions, but adding them does not calculate population growth. Option C is wrong because rainfall and temperature are environmental factors, not the population-growth formula. Option D is wrong because rivers and mountains have no arithmetic relationship in this calculation. A useful memory cue is “births add, deaths subtract, migration adjusts.”

Related tags

Population Growth FormulaBirths And DeathsNet MigrationPopulation GrowthPopulationGeographyClass 9 Mcq

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