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Why is it wrong to judge the role of rivers only by floods?

Answer and explanation

Correct answer: Because rivers also contribute to water supply soil formation transport and ecology

The direct answer is A: rivers contribute to water supply, soil formation, transport, and ecology as well as causing floods. A river has many connected roles. It can provide water for homes, farming, and industry; carry sediment that helps form or renew soil; support transport in suitable areas; and sustain fish, plants, wetlands, and other ecosystems. Floods are an important risk, but they are only one part of the full picture. Option A is correct because it gives several genuine river functions and encourages balanced evaluation. Option B is wrong because rivers can and do flood when water flow exceeds channel capacity. Option C is wrong because carrying water is the basic defining role of a river. Option D is wrong because floods are directly related to river flow, rainfall, drainage, and channel conditions. The correct method is to list benefits, risks, and effects on people and nature before judging the overall role. Memory cue: judge a river by both services and hazards, not by floods alone.

Related tags

GeographyDrainageRivers

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