Question

Diffusion is not enough to fulfill the need of oxygen for multicellular organisms like human beings give reason​

Answer 1

Answer:

Diffusion is unable to meet the oxygen requirements of multi-cellular organisms such as humans because diffusion is one of the slow processes. That is a lot of time is required for oxygen to circulate to all the cells of the body. ... Therefore, through diffusion, it becomes difficult for oxygen to reach all the cells

Explanation:

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Answer 2

Answer:

Diffusion is not enough to fulfill the need of oxygen for multicellular organisn like human beings because diffusion is one of the slow process .That is a lot of time is required for oxygen to circulate to all cell of body