1.

Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like human?

Answer» Because it is a very slow process and it may take minimum 3 years to travel through the whole body
Because diffusion is very slow and if our body would get oxygen through diffusion it would take 3 years to reach oxygen to our foot from lungs
Diffusion is a very slow process and it takes time to reach all the cells


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