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Which statement correctly describes the relationship between population growth and population density?

Answer and explanation

Correct answer: Growth can increase density if the area remains the same

Answer: A. Population density means the number of people living per unit of area, commonly written as population ÷ area. Population growth means a change in the number of people over time. If the population increases while the area remains constant, the numerator becomes larger and density increases. For example, 1,000 people in 10 square kilometres give a density of 100 people per square kilometre; if the population becomes 1,200 and the area stays 10 square kilometres, density becomes 120. A is correct because it states the required condition. B is wrong because population growth does not automatically change the physical area. C is wrong because death rate measures deaths, not people per unit area. D is wrong because growth is a change over time, whereas density is a population-area ratio. Memory cue: density asks “how many people per area?”; growth asks “how does the number change over time?”

Related tags

Population GrowthPopulation DensityAreaPopulationGeographyClass 9 Mcq

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