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If birth rates fall while total population and average age both continue rising, which combined pattern is developing?

Answer and explanation

Correct answer: An ageing but still growing population

A decline in birth rates usually reduces the proportion of children and gradually raises the average age. Yet the total population can continue to rise for some time because large earlier age groups may still be entering adulthood and having children. Low mortality and positive migration can also contribute to continued growth. Thus ageing and growth can occur together.

The combined pattern is an ageing but still growing population, so option A is correct. Complete stability would mean no overall increase, which contradicts the statement. High fertility and rejuvenation contradict falling birth rates, while migration-driven decline is not supported because the total population is rising rather than declining.

Related tags

Population AgeingDeclining Birth RatePopulation GrowthAge StructureThe World Population – DistributionDensity And GrowthThe World Population Distribution Density And GrowthGeography

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