Question

earthworms are eco-friendly. give two reasons

Answer 1

First :- Earthworms loosen the soil by burrowing deep into it. This is equal to tilling of the soil.
2:- Earthworms consume animal and plant wastes and release organic matter as its excreta. This excreta of earthworms increases soil fertility. It improves water holding capacity of the soil. 
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Answer 2

earthworms ate peels of vegetables and fruits , egg shells etc and it decomposed that . It not farm full for environment .