Everything can, just in different ways.
Castings
They poop.
Earthworm's poop or dung is like a super fertilizer.
They poop in it making soil. No lie, soil is actually worm poop. This makes it really rich in protein for planting and digging.
because the earthworms breakdown things in the garden like leaves and dead plants, and they fertilize the garden with their poop. they also aerate the soil when they eat it.
earthworms travel faster
Farmers only like some kinds of worms in their gardens: earthworms. Earthworms are good to have in your garden because they dig up the soil by eating it and then poop and it gives good nutrients to they soil. Also, their digging moves all the nutrients around and it provides for really good soil. This helps your plants grow better, faster, and stronger. You should look up earthworms on wikipedia.org or google.com.
Earthworms eat the soil, and excrete what they don't digest - leaving tiny piles of 'worm-poop' in the soil. This breaks down and adds to the general composition of the soil.
The bacteria in earthworms is called Eisenia Fetida it's in most earthworms
durkheim and earthworms
what continent does earthworms livfe on
Earthworms do not have legs.