2006-07-15 01:37:24 · 4 answers · asked by Anonymous in Education & Reference ➔ Primary & Secondary Education
They breath through their skin. Need it moist for respiration - gas exchange.
2006-07-15 01:41:32 · answer #1 · answered by jaybird 4 · 0⤊ 1⤋
Earthworms need moist skin to get oxygen to perform respiration. The moist surface allows for diffusion of this oxygen. If the skin isn't moist, the oxygen wouldn't be able to diffuse and the earthworm would die. But that doesn't mean that earthworms should live in the water, either. Ever notice them all over the place after a rainstorm? That's because they can't be totally submerged, either-- they'd drown.
2006-07-15 19:41:33 · answer #2 · answered by thinkharder 2 · 0⤊ 0⤋
so it can slide through the earth without rubbing its skin off
2006-07-15 08:41:16 · answer #3 · answered by Ivanhoe Fats 6 · 0⤊ 1⤋
cause it does not have bones so its body need to be support by fluid
2006-07-15 09:03:59 · answer #4 · answered by mellbez 2 · 0⤊ 1⤋