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What is the main difference between population growth and population size?

Answer and explanation

Correct answer: Size is total number and growth is change over time

Direct answer: A is correct. Population size means the total number of people living in a place at a particular time or during a specified period. For example, saying that a town has 50,000 residents describes its population size. Population growth means the increase or decrease in that number over time. To study growth, we compare population counts from two dates and consider births, deaths, and migration. Thus, size is a number or condition at a given time, whereas growth describes the change between times. B is wrong because birth rate is the number or rate of births, and area is the land surface; neither definition represents size and growth together. C is wrong because a population can be large but grow slowly, or small but grow quickly. D is wrong because population growth is a demographic concept, not a measure of weather. Memory cue: size answers “how many now?”; growth answers “how has the number changed?”

Related tags

Population SizePopulation GrowthDemographyPopulationGeographyClass 9 Mcq

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