Answer:
Mostly helpful, but some are harmful...
Explanation:
Hope this helps
Brainliest pls ❤️ (◍•ᴗ•◍)
In the lungs, oxygen is put into the blood and carbon dioxide is taken out of the blood during the process of breathing. After the blood gets oxygen in the lungs, it is called oxygen-rich blood.
I believe it would be cleaning, why?, well because when you clean you are most likely to plane how you want things to be cleaned and in order. So i would say B. Hope this helps <span />
