And it's the function, it's the responsibility of these alveoli to basically expel all that CO2 to the outside environment out of our body. And then the plants and trees can basically use the CO2 to produce the sugar molecules and then we can eat the sugar molecules and that process basically continues. Now, the problem with this is when all these trillions of metabolizing cells dump CO2 into our blood plasma, the CO2 molecules themselves are non polar. But the blood plasma, which consists predominantly of water molecules, is polar. And so the CO2 in its CO2 nonpolar form cannot actually dissolve inside the red blood plasma. Inside the blood plasma.