Which organism is called as Friend of farmers? Why?

Earthworm is called as Friend of farmers because:

i. They eat all the animal and plant wastes (biodegradable materials) present into the soil.

ii. As a result, they convert them into good manure.

iii. This increases soil fertility.

iv. They are eco-friendly organisms.

v. They make the soil more porous and airy by loosening the soil.

vi. They increase the water holding capacity.