Earthworms enrich the soil with their feces and allow air to get to the roots of plants.
Earthworms help the environment, so they can't be harmful to it. Unless they're dead, of course.
Earthworms are an important part of the soil environment, and the growth of plants. Oil is deadly to earthworms.
Earthworms are also known as ecosystem engineers. They help the environment by changing its structures when they cultivate and dig the soil.
The answer is that earthworms help to build soil and fertilize
Earthworms help decompose organic matter in compost heaps and in the soil.
earthworms like plants and they help plants grow.
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.
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earthworms.
vermicomposting
Earthworms help decompose
Earthworms help improve the health of a garden because its feces fertilize it.