What is the significance of earthworms in nature?

Since earthworms live in the earth, their main role in nature is associated with the earth. 1. The remains of organic matter are processed. They decompose them into inorganic substances that plants feed on. 2. Crawling in the ground, earthworms make it looser. Water and air penetrate more easily into such soil. 3. Reduce the acidity of the soil, as the esophagus has calcareous glands. Thus, the fertility of the soil increases. Also, earthworms are food for other animals, especially birds.