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A fertile agricultural soil appears dark coloured at the surface as compared to soil one metre down. The reason for colour of top soil isA. more moistureB. rich in organic matterC. rich in iron, calcium and magnesiumD. recent formation

Answer» Correct Answer - B
Dark colour of soil is due to accumulation of leached organic substances and organic matter which serves as a reservoir of nutrients and water in the soil, aids in reducing compacting and surface crusting and increases water infiltration into the soil.


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