why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans
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diffusion is insufficient to meet oxygen requirement bcoz all cells are not in direct contact with environment and it is a slow process
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In multicellular organisms such as man, the volume of the human body is big and hence, oxygen cannot diffuse into all the cells of the human body quickly. Diffusion, being a slow process will take a lot of time to circulate oxygen to all the body cells. Hence, diffusion is insufficient to meet the oxygen requirements of multicellular organisms like humans.
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