Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?
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We know that all parts of human body is not in direct contact with the surrounding, since the parts which is in direct contact can fulfill its need by simple diffusion.
Hence, in order to fulfill the needs of the non touched parts we need transport system to provide them oxygen.
Hence, in order to fulfill the needs of the non touched parts we need transport system to provide them oxygen.
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Hello Buddy here is ur answer!!!
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