My gosh they need the soil to survive it feeds and burrows in it and also protects the soil it is a critical procedure.
it sticks to the soil.
castings
worms are adapted in soil because their body temperature can with stand the temperature in the soil(since their body takes in moisture to live).
you people better figure it out or else......
Earthworms make soil healthy by going underground
Because earthworms eat just about every other organism in the soil.
they fertilize the soil
No, but the earthworms in the soil reproduces.
When you touch a earth worm it quickly contracts and withdraws into its burrow.The earthworm has no eyes so it cannot tell that you are a bird about to eat it. Its rapid withdrawal is a behavioural adaption to avoid being eaten.
An earthworm's body is adapted to life in the soil by having a slender body and by digesting soil. The long body makes it easier to burrow. Also, by just digesting the soil and passing it through the anus the worm can get nourishment while just moving.
The answer is that earthworms help to build soil and fertilize
earthworms