Question

of acquiring ouren from outside the body
of break-down of food sources for cellu
respiration
in the case of a single-celled organism.
in food. exchange of gases or removal of was
the entire surface of the organism is in cor
But what happens when the body size of t
the body design becomes more complex? I
all the cells may not be in direct conta
environment. Thus, simple diffusion will
all the cells.
We have seen​

Answer 1

Answer:

so wat u r actually asking

Explanation: