The cell receives the food through a vacuole, this process is called endocytosis. The cell takes this and will break it down to the simplest form of energy at the mitochondrial matrix, and create 38 ATP from respiration.
It is 4 whole and 3/8 and 3 wholes and 1/2
The circulatory system is very useful. This system transports the food nutrients, and oxygen to the body cells. It also delivers of carbon dioxide and waste products. This helps the respiratory system by transporting nutrients to keep the lungs clean, and healthy.
Stabilizing selection... I think it might be right if I'm wrong, sorry if I am.