Answer:
gdk
and got tooka killed Explanation:
Answer:
The alveolar walls and capillary walls share a membrane. That's how close they're getting. This allows oxygen and carbon dioxide to readily pass from the respiratory system to the circulation. Oxygen molecules bind to red blood cells as they return to the heart.
Not sure what the choices are but a biotic factor is anything living.
Answer:because it doesn’t need to consume energy to survive, nor is it able to regulate its own temperature.
Explanation:
The answer is either a or c
