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:
its a potentially life-threatening eating disorder made by vomiting on purpose
Go at least 3 to 5 miles per hour
Answer:
threatening the person looks like a good option I don't really understand ''Giving in to run the motions'' and ''Giving the person away out.''
Explanation:
Sometimes you got to do what you have to do if it feels like the person is bullying you/ giving harmful words or doing harmful words to you it's best if you threatened the person. If you don't then the things will happen. Revenge is the second option, I would take it lightly on him/her/them. Just show the person a lesson that's not tough, okay?
1st option
Threaten the person
if that doesn't work then
2nd option
Seek revenge
Have a nice day or night!~
Answer: Exercise releases endorphins in the brain and thus, why she is feeling an increase in energy and well being
Explanation: