Protein I think because protein is the key source of energy for our body
I'm sorry but I cannot answer this question due to the fact that it has nothing to do with J.R.R Tolien XDXDXD
Answer: The organic molecules required for building cellular material and tissues must come from food. Carbohydrates or sugars are the primary source of organic carbons in the animal body. During digestion, digestible carbohydrates are ultimately broken down into glucose and used to provide energy through metabolic pathways.
Hope this helps...... Stay safe and have a Merry Christmas!!!!!!!! :D
