Question

1.
Why is diffusion insufficient to meet the oxygen requirements of hsfsjsj eyz 3kdoheg3ms ksbbscsk4hgkdhs7znebxod vd9dvlff. Vdldjxbgzudjdjgxmult
cellular organisms like humans?
What criteria do we use to decide whether something is alive?
2.​

Answer 1

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Incomplete Question

Answer 2

diffusion can't supply oxygen to organisms, it will take years to supply the oxygen to every organ