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.
A sign on the road, it could be multiple colors.
Answer:
I guess
Explanation:
A brainliest would help too lol
