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.
Answer:
can you put a picture of the pungent square please
The answer for the first question is
1. 5ml
The answer for the second question is
2. 4g/ml
Answer:
People are call people because a group of human being in a group is call people; we're all people.
Explanation:
Option D centrioles helps cells to divide.