The two cell layers being referred from the question are a layer of alveolar cells and layer of endothelial cells. Gases must diffuse to these layers to proceed to the plasma. The layer of alveolar cells make up the alveolar wall while the layer endothelial cells consist the capillary wall.
Answer:
It tells you that nick is either busy alot so he forgets some things. Or that nick forgets things alot. I think it is the first one because people usally dont forget their birthday.
Explanation:
Sorry if this is wrong. I tried. Can I please have brainliest and a thanks if you like my answer.
<span>The factor which is not part of the Highway Transportation System is D. television stations. TV stations don't really have much to do with the transportation system at all - those are just programs that you watch on your TV when you are home. However, people, vehicles, and roadways do have a lot to do with highways and transportation - people drive vehicles on the roads in order to transport things.</span>
