I think C. You can't have just proteins or no fats in your diet. It needs to be balanced with a little of everything.
I think the circulatory system is the best body system because we need the heart to stay alive, many people live with only one lung. but we need the respiratory system to let oxygen in, and let carbon dioxide out.
Answer:
It is important because if your cells do not reproduce you would eventually run out of cells and die.
Explanation:
Answer:
Any iron or metal cleaning
