Answer:
Allows for the breathing in of oxygen. Removes carbon dioxide from the body.
Explanation:
When you inhale in you get oxygen from the air and it goes into your blood. Right at the same time carbon dioxide comes out of your blood into, goes into your lungs and gets exhaled.
I think that the answer is A .
The logical awnser would be study first, and if you have time watch tv. But if there is no time for tv, Pauline should go straight to bed.
Study
tv
sleep
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