I think t or r............
C. Organ System
Like said in the definition above, an organ system is a group of organs working together to perform a specific function for the organism.
hope this helps !! have a great day :))
Fats are used for energy after they are broken into fatty acids. Protein can also be used for energy, but the first job is to help with making hormones, muscle, and other proteins. Broken down into glucose, used to supply energy to cells. Extra is stored in the liver.
B.) Soda pop is the solution among them........
