Why is diffusion such an efficient process for all cells?
A. It does not require energy.
B. It occurs so quickly.
C. The high amount of energy used during diffusion is offset by
the amount it creates.

A.

Explanation:

Diffusion does not require energy. It's depends on the concentration gradient of the two molecules.

answer; i believe that the correct answer is (lung);

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

hope this : )