2 ) is light
3) yes
4) energy that runs off of batteries
It is unchanged and can be used again for the same chemical reaction.
is the answer
B) Proteins
Lipids and Carbohydrates only contain carbon, hydrogen, and oxygen.
Unsaturated fats are a type of monomer for lipids, meaning they as well are only made up of carbon, hydrogen, and oxygen.
When yeast rises, it creates air bubbles