Yes, yes they do.
they live underground because they find food there
Earthworms live in the soil. Earthworms however will only live in soil where there is food, moisture, oxygen and a favourable temperature. If they don't have these things, they will go somewhere else.
Earthworms typically live for about 1-2 years in a container, depending on factors like temperature, moisture, and food availability.
Earthworms live in glaciers.
Most Annelids live in the soil. They eat food which is available in the soil. Examples of Annelids are earthworms.
earthworms live in complicated dug-out communities underground.
Earthworms needs alot of things in order to live, Because they all live underground. Inaddition to that earthworms needs... -soil -leaves -underground and plants. We all make earthworms depending on the environment we have it in.
Earthworms live in the earth, mostly in muddy grounds where you can actually see one.
Earthworms cannot live on leaves because they require a moist environment to survive, and leaves alone do not provide sufficient moisture. Additionally, earthworms primarily inhabit soil, where they can burrow and access organic matter for food, such as decaying plant material and microorganisms. Leaves can become dry and may not offer the nutrients or habitat that earthworms need for their survival and reproduction.
If you are asking if Koi like to eat live food then the answer is "yes they love live Earthworms and many other living aquatic insects, larvae etc.
the sky
Earthworms live all over the world, there is no specific place they live in.