Answer:
Calcium
Protein
Ruby can make sure he gets these nutrients by having him eat meat, beans, peanuts, cheese, yogurt, and soy/almond milk.
Explanation:
Blood has three main functions: transport, protection and regulation. Blood transports the following substances: Gases, namely oxygen (O2) and carbon dioxide (CO2), between the lungs and rest of the body. Nutrients from the digestive tract and storage sites to the rest of the body.
You get tired when you run because our leg muscles don't get enough oxygen anymore.
