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: Photosynthesis is an anabolic reaction because it combines simple molecules into more complex molecules.
Explanation:
This is sexual harassment 100% he is talking sexually to her and she said to stop but he didnt so therefore sexual harrasment. Hope this helps!
Yes because a open fracture is when the bone comes out of the skin. So to be a closed fracture it has to be inside the skin.
