Blue would be the hottest. And red would be considered the coolest.
The respiratory system works with the digestive and circulatory systems to make cellular respiration possible. During cellular respiration, your cells use oxygen and glucose to release energy. Carbon dioxide is a waste product of the process. Carbon dioxide must be removed from cells.
Info from: Google lolz.
Answer:
The concentration of a substance is the quantity of solute present in a given quantity of solution.
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