Tell us about the earthworm lifestyle.

Earthworms are in the soil, they constantly plow the ground. But when it rains, the worms come out, as water fills their passages and a lack of oxygen begins. But as soon as the water evaporates, the worms immediately return. In dry periods, they can be seen only in the deep layers of the soil. The merits of worms include loosening the earth and, as a result, humus appears, which is very useful for plants.