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Which option gives the correct formula idea of population growth?

Answer and explanation

Correct answer: Growth = Births − Deaths + Net Migration

Direct answer: Option A is correct. A population changes because people are added through births and in-migration and are removed through deaths and out-migration. Net migration means in-migration minus out-migration. Therefore, the basic idea for total population change is births minus deaths plus net migration. If births exceed deaths and more people enter than leave, growth is positive. If deaths and out-migration are larger, the change may be negative. Option A captures these processes in a compact form. Option B is wrong because rivers and mountains are physical features, not components of a population calculation. Option C mixes rainfall and soil, which do not form a population formula. Option D uses area and colour, neither of which measures population change. Memory cue: add people who enter, subtract people who leave.

Related tags

Population Growth FormulaBirthsDeathsNet MigrationPopulation GrowthPopulationGeographyClass 9 Mcq

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