The major function of iron in the body is the formation of compounds essential to the transportation and utilization of oxygen to further this purpose the vast majority of iron in the body is used to form hemoglobin.
Iron is involved in energy production and through its role in the electron transport chain (ETC) . Heme contained molecules which are called cytochromes are involved in electron transport for ATP production by reducing iron in the heme from its ferric form to its ferrous from and vice versa.
It is helpful in the production of hemoglobin a protein that allows red blood cells to carry oxygenated blood to every cells of the body.It makes hemoglobin , a protein in red blood cells which carries oxygen from the lungs to allover the body and myoglobin , protein that provides oxygen to muscles.
Tad poles have gills that help them breathe underwater. frogs have lungs that help them breathe underwater. tadpoles have tails and fins to help them swim underwater. frogs have arms and legs to help them swim.
Well chicken helps your muscles , lemon helps clean your body,potatoes I don’t know and avocado is a type of vegetable so is healthy so I think chicken or lemon