Convection and diffusion gas exchange in air or water.
D000388:Air; D000818:Animals; D002245:Carbon Dioxide; D002642:Chick Embryo; D004058:Diffusion; D008433:Mathematics; D010100:Oxygen; D011312:Pressure; D012119:Respiration; D014867:Water
D014867:Water; D002245:Carbon Dioxide; D010100:Oxygen