Not too long ago, the presence of earthworms in the soil was overlooked because it was not thought to have any impact. But with further research, we now understand that biological life in the land is crucial to the development of crops. Earthworms have a variety of positive affects on the soil. For instance, they created vertical holes that allow rain to infiltrate the ground. They help neutralize the pH of the soil. They eat nematodes which could be harmful for the surrounding area. Their excretion help decompose the crops’ residue. They also create a topsoil which helps the growth of the plants. But humans have to do their part to aid the earthworms. They have to make sure they have a source of food such as soil residue and manure. Also, certain pesticides should not be used that might kill the earthworm population. Earthworms are often introduced to environments where they are not abundant in because of their long lasting benefits.