10 facts about earthworms:
1.When they go through the ground they bring air into the soil.
2.earthworms eat things that are dead.
3.If it is cut in half the part with the head will still live.
4.More than 3,000 species exists in the world.
5.A worm is a hermaphrodite.
6.Worms cannot see or hear.
7.Worms can have 1-5 pairs of hearts.
8.It uses it's skin to breathe.
9.Worms are cold-blooded.
10.Worms live for up to 3-4 years.
Above is the link to the website that I used.