why is diffusion insufficient to meet the oxygen requirements of large multicellular organisms like humans?
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Multicellular organisms such as humans possess complex body designs. They have specialised cells and tissues for performing various necessary functions of the body such as intake of food and oxygen. Unlike unicellular organisms, multicellular cells are not in direct contact with the outside environment. Therefore, diffusion cannot meet their oxygen requirements
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Explanation:
The volume of the human body is big and oxygen cannot diffusion into all the cell of the human body quickly. I hope it will help you ☺
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