Answer: A
Explanation: The blood–air barrier (alveolar–capillary barrier or membrane) exists in the gas exchanging region of the lungs. It exists to prevent air bubbles from forming in the blood, and from blood entering the alveoli. ... The barrier is permeable to molecular oxygen, carbon dioxide, carbon monoxide and many other gases.
Answer:
d
Explanation:
⁰ it's the pharmacist job to explain the medication to the clients
thats pretty cool but I can drink 10 gallons of glue in a min
Your answer is C.........