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Why is time period important in measuring population growth?

Answer and explanation

Correct answer: Because growth shows change during a fixed period

Direct answer: Option A is correct. Population growth means the change in the number of people over a stated period. A number by itself tells us the population size, but it does not tell us whether the population has increased, decreased, or remained stable. First, record the population at an earlier date. Next, record it at a later date. Then compare the two figures by subtraction. Finally, state the period, such as one year or ten years. The period helps us judge how fast or slow the change was and allows a fair comparison between places or years. Option A is correct because it connects growth with change during a fixed period. Option B is wrong because time does not create rivers. Option C is wrong because the disappearance of mountains is unrelated to measuring population. Option D is wrong because soil names have no role in this calculation. Memory cue: growth needs two things—change and time.

Related tags

Time PeriodPopulation GrowthMeasurementGeographyPopulationClass 9 Mcq

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