Then we either eat the plants or we eat the animals that ate the plants. And the cycle basically repeats itself. So we conclude that carbon dioxide is carried in our cardiovascular system in three different ways. About 5% of the nonpolar carbon dioxide is directly dissolved in the blood plasma and so travels to the lungs directly in the blood plasma. About 10% to about 14% in some cases is being held by that hemoglobin. And that carbon dioxide, when it combines with hemoglobin, it creates the bore effect and that basically decreases the Vinity of hemoglobin for oxygen and the remaining about 85%.