Crop rotation between a heavy nitrogen-using plant like corn and a nitrogen-depositing plant like soya bean helps in preserving .
A
soil composition
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B
plant nutrients
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C
cleanliness of air
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D
salinity of water
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Solution
The correct option is A soil composition Crop rotation is the process of cultivating various crops in the same soil. Planting a nitrogen-using plant like corn and a nitrogen-depositing plant like soya bean preserves nitrogen in the soil. This preserves soil composition and enables sustainable development.