Earthworm
Earthworm:
Earthworms are probably the best known and most common of the annelids; more than 2,700 kinds of earthworms have been identified around the world. They range from no more than a half-inch long to many feet long; the largest recorded earthworm was 22 feet. Earthworms exist in great numbers anywhere the soil isn’t frozen; it’s estimated that a single acre of fertile soil holds up to a million earthworms. These coldblooded creatures are hermaphrodites, meaning each one is both male and female, and they reproduce by laying eggs encased in cocoons. A earthworm does not have a skeleton. It has bristles on each segment called setae that help the earthworm move. Earthworms have no limbs. The earthworm has two sets of muscles; one that makes it long and thin and one that makes it fat.
Earthworms are probably the best known and most common of the annelids; more than 2,700 kinds of earthworms have been identified around the world. They range from no more than a half-inch long to many feet long; the largest recorded earthworm was 22 feet. Earthworms exist in great numbers anywhere the soil isn’t frozen; it’s estimated that a single acre of fertile soil holds up to a million earthworms. These coldblooded creatures are hermaphrodites, meaning each one is both male and female, and they reproduce by laying eggs encased in cocoons. A earthworm does not have a skeleton. It has bristles on each segment called setae that help the earthworm move. Earthworms have no limbs. The earthworm has two sets of muscles; one that makes it long and thin and one that makes it fat.