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-Pathway for O2 flow
-Passive diffusion of gases
-Air vs. water O2 levels
Enhancing diffusion 2
-Decreased thickness of gas exchange membranes
-thin walls of aveoli
-thin walls of capillaries
-thin skin (amphibian)
Factors that affect gas solubility
-Properties of the gas: CO2>>O2>>N2
-Partial Pressure in air
-Temperature of water: solubility inversely related
-Dissolves solutes in water: solubility inversely related
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