They are everywhere there is soil. Experts believe native worm species were wiped out when glaciers covered the earth. Most of today's earthworms originated from Europe by traveling in the rootstocks of plants. Worms make soil and are natural soil tillers.

How worms are created?

Following mating, each worm forms a tiny, lemon-shaped cocoon out of a liquid secreted from its clitellum, the familiar-looking bulge seen near the first third of the earthworm's body. The sperm and egg cells are deposited inside the cocoon, and it is buried.

How do worms appear from nowhere?

Maggots don't just show up out of nowhere; they show up for a reason. Flies become attracted to some rotting material or spoiled food in your home and use that as a breeding ground to lay their eggs which hatch to become maggots.