Asked by SAKSHI

Why is diffusion insufficient to meet the oxygen requirement of multicellulars like us?

Answers

Answered by Amber
what adaptations are needed if an organism performs internal external fertilization?
Answered by sunakshi
In a multicellular organism all the cells of the body are not in the direct contact with they environment so it would take long time for oxygen to reach our whole body.hence diffusion insufficient to meet the oxygen requirement of multicellulars
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