Explain how diffusion allows gases to move into and out of the alveoli of the lungs. use the term red blood cell in your explanation.

There is a high concentration of O2 inside the alveoli and a low concentration of O2 in the blood, O2 diffuses into the blood. hope this helps!!

The olympics y

I'd say 8. i'd u don't so what u should u don't get what u want.