Answer:
obtaining oxygen and releasing carbon dioxide
Explanation:
Its not C. You would think it would but its not. I feel like its A or B.
usually 12 to 16 days before she receives her period and the 5 days that follow her period ending
The lungs are an important part of the respiratory system,lungs allow you to breathe. The lungs are part of the respiratory system and they include airways that carry air in and out of your lungs, blood vessels surrounding the lungs, and the muscles that help you breathe.
What about this certain substance
