The best way is to drink milk and exercise, since Milk gives calcium and exercise helps keeps bones strong.
<span>b. They release oxygen that organisms use to breathe.</span>
No the answer is not A because all your mucus builds up in your respiratory system not respiratory secretion. <span />
Answer:
C. Live a healthy lifestyle, get the necessary vaccinations, and make sure to wash your hands often.
B. if you're never by yourself
A. lung cancer
Explanation:
