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Which problem may increase in a drainage system without rivers?

Answer and explanation

Correct answer: Natural flow of water will become difficult

The direct answer is A, natural flow of water will become difficult. A drainage system is the network through which rainwater and other surface water move away. Rivers and streams collect water from smaller channels and carry it onward. If rivers were absent, water would have fewer natural outlets, so waterlogging, stagnant water, and flood risk could increase in suitable areas. Option A is correct because it describes the direct drainage problem. Option B is wrong: removing rivers cannot make rainfall always stop. Option C is exaggerated and unrelated; mountains would not all disappear. Option D is wrong because the sea would not dry up merely because rivers were absent. The question asks about drainage, so focus on movement and outlet of water. Memory cue: rivers are natural channels for excess water.

Related tags

GeographyDrainageRivers

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