Use what you have learned about diffusion distance, concentration difference, and surface area to explain what conditions are needed to improve the diffusion rate of oxygen from the lungs to the blood for a patient diagnosed with hypoxemia.

its 42

i say its d?

not sure if this is what you'r looking for eubacteria and archaebacteria

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.