please answer it please
Answers
Diffusion is insufficient to meet the oxygen requirements of multicellular organisms like humans because all the cells are not in direct contact with the environment and diffusion is a slow process.Diffusion is too slow to cover the distance between the gas exchange surface and the sites where the oxygen is required.
Answer: diffusion is very much insufficient to meet the requirement of oxygen in multicellular organism like human being because diffusion take place on the surface of the body and our internal organs would not be able to get the requirement fulfilled of oxygen by this process.
that is why it is considered to be insufficient and so multicellular organism like us follow the method of respiration to fulfill their requirement of oxygen so that they can get energy.
I hope my answer will help you.