Carbon dioxide is far more soluble. It's like if you were to have a hill or a slide, the oxygen slides real steep and the carbon dioxide slide isn't steep at all. So it goes from the blood into the LVRI so we can breathe it out. The water that's surrounding the respiratory membrane and the water in the blood... There is a bit of water lining the Aviali. Okay. That dissolves into that. Just like mineral water or soda water. Goes into it. And bubbles across into the blood. Yeah. But the blood... So the gradient is 104 on theAviali side and in the blood side it is only 40 millimetres a