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In which circumstance is it necessary to consider time interval while estimating population change?

Answer and explanation

Correct answer: When two periods have to be compared

The correct answer is A: consider the time interval when comparing two periods. Population change means the difference between population at the beginning and at the end of a stated period. First identify both dates, then subtract the earlier population from the later population. If needed, divide the change by the number of years to find an average annual change. For example, an increase of 10,000 people in one year is much faster than the same increase over ten years. A is correct because comparisons require a common time basis. B is unrelated to population measurement. C concerns area, not duration. D is a map activity and gives no information about population change. Memory cue: change must always be linked to “how much in how much time.”

Related tags

Time IntervalPopulation ComparisonGrowth RateProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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