Question

why is diffusion insufficient to meet the oxygen requirement of multicellular organism like humans​

Answer 1

Answer:

In multicellular organisms such as man, the volume of the human body is big and hence, oxygen cannot diffuse into all the cells of the human body quickly. ... Hence, diffusion is insufficient to meet the oxygen requirements of multicellular organisms like humans.

Answer 2

Answer:

in multicellular organisms like humans there are about trillion cells in the body

so it is impossible to transport oxygen to each and every cell in the body

that is why our body has different type of mechanism to transport materials , which is called as circulation

HOPE IT HELPS YOU

PLEASE MARK BRAINLIEST