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Why should total population be studied separately from population growth rate?

Answer and explanation

Correct answer: Because a large population with a low rate can still add a huge number of people.

The correct answer is A. Total population tells us the actual number of people, whereas the growth rate tells us the speed or percentage at which that number changes. Consider a simple comparison: a small population growing at a high percentage may add fewer people than a very large population growing at a low percentage. For example, 10% of 100 is 10, while 1% of 10,000 is 100. Therefore, planners must consider both the rate and the total number. A is correct because a low rate applied to a large population can create a large numerical increase and substantial needs for food, housing, schools and health services. B is wrong because percentage rate and actual number are different measures. C is wrong because total population is essential for planning. D is wrong because population growth rate concerns human populations, not rivers. Memory cue: rate shows speed; total population shows scale.

Related tags

Growth RateTotal PopulationPopulation PlanningPopulation GrowthPopulationGeographyClass 9 Mcq

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