Question

Give the scientific reasons for the soil should be loosened before seeds are sown.

Answer 1

To allow the roots to penetrate deep into the soil..
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Answer 2

The first step before growing a crop plant is the preparation of soil for sowing of seeds, the soil has to be loosened so that the roots of plants may penetrate deep into the soil, the loosening of soil allow the roots to breathe easily because loosened soil promotes growth of organisms like earthworms and microbes