The pulmonary artery and its branches deliver blood rich in carbon dioxide (and lacking in oxygen) to the capillaries that surround the air sacs. The circulation of the blood through the lungs. The veins that return the oxygenated blood from the lungs to the left atrium of the heart.
...the fact that they are a physical contaminant.
Carbon dioxide, and Sulfur dioxide, because you have to know what gas are very dangerous and which ones arent........
I think it is: physical
Explanation:
your social life shouldn't be a requirement to live
Answer:
Option B 17.6, underweight is the correct answer