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In the context of population growth, replacement level is related to what?

Answer and explanation

Correct answer: Enough births to keep generation size nearly stable in the long run

Answer: A is correct. Replacement-level fertility refers to a level of childbearing at which one generation is, in the long run, roughly replaced by the next generation, subject to survival and population conditions. The basic idea is not that the total population becomes fixed immediately; population may continue to change because of age structure, population momentum and migration. A is correct because it connects replacement level with the continuation of generation size over time. B is wrong because rainfall and river filling are hydrological ideas. C is wrong because migration changes the distribution or size of populations in places but does not define replacement fertility. D is wrong because land formation is a geological process. Memory cue: replacement means one generation replacing another, not replacing land or water.

Related tags

Replacement-LevelFertilityGeneration-SizePopulation-StabilityPopulation GrowthPopulationGeographyClass 9 Mcq

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