Question

it has been seen that earthworms come out of the soil when it rains why do they do this​

Answer 1

Because earthworms stay in the soil. When the rain water fills the place of earthworms and then have no place to stay. So they come out when it rains

Answer 2

Answer:

Earthworms come on land after the rain:- so that they can move over land.The temporarily wet conditions give worms a chance to move safely to new places.**Since worms breathe through their skin, the skin must stay wet in order for the Oxygen to pass through it.** So it gives them an opportunity to move greater distances across the soil than they could do through soil. Hope it will be helpful.