Hydrogen and Oxygen. Better known as H2O
No. all lipids r semi-solid, like room temp. butter..
Answer:
Protein is also used for growth and repair. Amid all these necessary functions, proteins also hold the potential to serve as a metabolic fuel source. Proteins are not stored for later use, so excess proteins must be converted into glucose or triglycerides, and used to supply energy or build energy reserves.
I think that it is the bone system please tell me if right