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:
Diffusion
Explanation:
Diffusion is the process whereby molecules move from an area of high to low concentration
Answer:
Weight = mass * force of gravity
W = 3 * 9.81
Explanation:
She should use as large a sample size as possible because she vets more data. S he also repeat this at least twice to get accurate data
