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.
Part of us humans daily life.
They would not have the same shape because they would basically be the same as that particular vitamin. If a vitamin was the same shape as c then it would be vitamin c. Therefore, they would not be the same shape.
