Muscles are <u>repaired </u>and built back up throughout life with new muscle tissue.
Answer:
wrong subject and none of theses is the answer :(
Insulin is released into the blood when oxygen levels are low and blood glucose levels are high
It is called <span>semiconservative replication.</span>
In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.