How does the reproduction process of an earthworm take place?

Each individual earthworm has both male and female genital organs. They are capable of both self-fertilization and cross-fertilization. The sex cells are located in a special girdle, and after fertilization, eggs are formed in it. After a while, they come out in the form of a cocoon, then small worms appear in it, which begin to grow after a few months, already reaching the adult stage.