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If birth rate is sixteen per thousand and death rate is nine per thousand but net migration is minus four per thousand, what is the total growth rate?

Answer and explanation

Correct answer: Three per thousand

The direct answer is A: three per thousand. Population change has two parts: natural increase and net migration. First calculate natural increase by subtracting the death rate from the birth rate: 16 − 9 = 7 per thousand. Net migration is −4 per thousand, which means there are four more people leaving than entering, so it reduces the increase. Therefore, total growth = natural increase + net migration = 7 + (−4) = 3 per thousand. A is correct because it includes both births and deaths as well as migration. B is wrong because it gives only the natural increase and ignores negative migration. C is wrong because it adds four instead of subtracting it. D is wrong because it does not follow the population-growth formula. Memory cue: natural growth is birth rate minus death rate; total growth also includes net migration.

Related tags

Birth RateDeath RateNet MigrationPopulation GrowthPopulationGeographyClass 9 Mcq

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