<span>b. They release oxygen that organisms use to breathe.</span>
Answer:
Our bones are actually living tissue who constantly renew themselves. Your skeleton is completely new every 10 years, so I would say B (Show change) is the correct answer.
Explanation:
People also lose bone mass/density as they age due to a lose of calcium and other minerals. This does not shorten the bones, but rather makes them more brittle.
