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Why are base year and final year important in understanding population growth?

Answer and explanation

Correct answer: They clarify the period and direction of change

Correct answer: B. To study population growth, we compare population data at two points in time. The base year is the starting reference, and the final year is the later point used for comparison. These years tell us the time period over which the change occurred and help us identify its direction—whether population increased, decreased, or remained unchanged. They also prevent a numerical figure from being interpreted without context. A is wrong because selecting years does not remove or change the birth rate. C is wrong because years have no power to change the area of a region. D is wrong because migration can continue regardless of the selected years. Memory cue: no time points, no meaningful growth comparison; always ask “from when to when?”

Related tags

Population GrowthBase YearFinal YearTime PeriodPopulationGeographyClass 9 Mcq

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