Muscles are <u>repaired </u>and built back up throughout life with new muscle tissue.
One reason is if someone is injured and needed to use pain pills, sometimes they get addicted to it
A large class of molecules is called a macromolecule.
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Explanation: