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.
<span>Drowsiness. Nausea. Dry mouth. Insomnia. Diarrhea. <span>Nervousness, agitation or restlessness.</span></span>
Proteins are very important for your body, just like vegetables and fruits are. It is good to have a balanced amount of proteins in your body because they benefit you in many different ways in your cells.
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I think it would be kidneys because of the way the question is worded, kidneys are the only things you have 2 of that also is involved in the digestion of foods.