They use diffusion to get air through there body walls.
well ask yourself what does diffusion mean and compare it to cellular respiration and photosynthesis
Diffusion
Respiration and diffusion
"respiration"
Diffusion
Diffusion..
facillitated diffusion and active transport
Diffusion occurs in the human body in a variety of ways. Examples of diffusion are through respiration, ion movement and the diffusion of nutrients in the kidney and small intestine.
Diffusion is a body process that does not require energy from respiration.
diffusion of gases through the cell membraine.
through diffusion of gases....