Your lungs are constantly exchanging oxygen and carbon dioxide between your body cells and your blood cells by diffusion. as you exercise intensely, your body temperature increases slightly. how does this affect the process of diffusion? a. the rate of diffusion increases due to your slightly higher body temperature. b. the rate of diffusion decreases due to your slightly higher body temperature. c. the rate of diffusion is unaffected by changes in temperature. d. diffusion stops completely during periods of over-exertion.