资讯

Subjects: Science Years: F–2, 3–4, 5–6 What happens to an earthworm throughout its life? Life begins when two worms mate, top to tail. A hard covering forms around the worm and it wriggles ...
LIFE CYCLE: Little is known about the life cycle of this species. In general, juvenile earthworms emerge from their egg case as small but fully formed earthworms, with sexual structures to be ...