I can try what’s the question
Answer: c. disease
Explanation: A state of good health and a state of disease is a gray zone of suboptimal health.
Oh tin!! I just got steampunked by a steamroller.
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.
