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How do rivers change landforms?

Answer and explanation

Correct answer: They change the land through erosion and deposition

Correct answer: B. A river changes the land mainly through two connected processes: erosion and deposition. Erosion means that flowing water loosens and carries away soil, sand, and pieces of rock. This can deepen a channel, cut a valley, or wear away a river bank. Deposition occurs when the river loses speed and drops the sediments it was carrying. Deposited material may build floodplains, sandbars, natural levees, and deltas. Thus, a river is both a wearing-down agent and a land-building agent. Option A is wrong because rivers do not merely change colour. Option B is correct because it includes both major processes. Option C is wrong because clouds, not rivers, may block sunlight. Option D is impossible and has no geographical connection. Memory cue: a river both cuts and builds—erosion removes, deposition adds.

Related tags

GeographyDrainageRiversErosionRole Of RiversClass 9 Mcq

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