Answer:
The blood picks up co2 and also waste from the tissue. So I am guessing that it is co2.
Hope this helps.
Stay active. Regular exercise is good for your physical and emotional health. ...
Don't drink alcohol. Alcohol is a natural sedative. ...
Stop smoking. ...
Ditch caffeine. ...
Get some sleep. ...
Meditate. ...
Eat a healthy diet. ...
Practice deep breathing.
Answer:
the answer is definitely d
Answer:
Female
Explanation:
I took the test so You are good