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Why can alluvial soil formed by rivers weaken under excessive agricultural pressure?

Answer and explanation

Correct answer: Excess chemicals and water use can reduce soil quality

The direct answer is A. Alluvial soil is deposited by rivers and is often fertile, but fertility does not mean permanent immunity from damage. Step by step, intensive farming may require repeated irrigation and chemical fertilisers or pesticides; excessive water can cause waterlogging or salinity, while excessive chemicals can disturb soil organisms and reduce soil quality. Continuous cropping can also remove nutrients faster than they are replaced. Therefore option A correctly explains why even river-made soil can weaken under pressure. Option B is wrong because no soil is completely unaffected. Option C is wrong because a river does not always renew soil in the same place or at the same rate. Option D is wrong because farming directly depends on soil for plant growth and nutrients. Sustainable farming, balanced fertiliser use, crop rotation, and careful irrigation help protect alluvial soil. Memory cue: fertile soil still needs conservation.

Related tags

Alluvial SoilAgricultural PressureSoil Quality

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