Give scientific reasons: Earthworm is known as the farmer's friend.

(N/A) Earthworms are known as the farmer's friend because they perform several beneficial activities for the soil:
$1$. They help in the breakdown of complex organic matter into simpler substances,which increases the fertility of the soil.
$2$. They burrow into the soil,which helps in loosening the soil (aeration),allowing roots to penetrate deeper and improving water drainage.
$3$. Their excreta,known as worm castings,are rich in nutrients,which act as natural fertilizers for crops.