1 Why is diffusion insufficient to meet the oxygen requirements of multi- cellular like humans?
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Answered by
1
Answer:
Because human beings r multicellular n complex organism in which not every cells are in direct contact with environment. It takes 3 yrs to reach oxygen from lungs to toe.
Answered by
0
Answer:
sapmays
Explanation:
she said it takes 3 yr to reach to some parts buy that is related to some particular organs like feet
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