Honestly, it’s corona time but it’s going good.
Can you do me a favor and mark me Brainliest please?
Can be carried along on a trip
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:
because of pollution and less good environment
Answer:
Epinephrine
Explanation:
I am pretty sure Epinephrine because it is adrenaline. I feel like a customer shouldn't be able to buy that themselves.
