Number one is B also number 2 is also B because I did it before
Because we all came from two people bible wise. Evolution wise, same thing kinda. We all came from the same person in the beginning.
Answer:
Explanation:
In facilitated diffusion, molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers. A concentration gradient exists for these molecules, so they have the potential to diffuse into (or out of) the cell by moving down it.
