Compare and contrast between an Earth Worm and a Crayfish

Movement
Worm
-The worm has setae on the bottom of its body that run along down its body that help it have grip so it can move along.  The worm moves from waves of muscular contractions which shortens and lengthens its body.
Cray fish
-Cray fish move with there legs, but also flip there tail fast nd repeatedly

Reproduction
Worm
-The earth worm is a hermaphrodite, meaning it has both eggs and sperm.  The worm releases both into a cacoon made of mucus, then the sperm will fertalize the eggs and create a new worm.
Cray fish
-Males produce a package of sperm and place it on the female, the female curls up her abdomen in and places the eggs on her swimmerets.  They are placed on the swimmerets because they are protected and get oxygenated.

Habitat
Worm
-the earth worm lives in soil and produces a mucus to make the soil moist so they can stay deep in there burrows.  The earth worm breathes through its pores on its body.
Cray fish
- cray fish live in fresh water, ponds, and in salted water.  The cray hide under mud, rocks, and grass to proctect themselves from predators. Pregnant females are especially likely to do this.  Cray fish breathe from gills that are located under the capace, water containing oxygen then flows over the gills.

Nervous system
Worm
-The brain is connected to the ventral nerve cord which runs down the body.  At each segment, segmental ganglion brach off from the cord, which connects every segment to the brain
Cray fish
-A nerve cord that functions on escape responses