fine diffusion. How diffusion helps in the exchange of gases?
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Diffusion is the passive movement of a substance from an area of high concentration to an area of low concentration. At the level of the lungs, the blood typically has a lower oxygen concentration than the gas in the alveoli. As a result, oxygen diffuses into the blood. ... So oxygen from blood diffuses into tissues
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Process of moving of particles from higher concentration to low concentration
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