What information does the complete ionic equation give?
A. It shows what compounds will react to form a precipitate.
B. It shows what compounds dissolved to form the ions.
C. It shows only the ions that are involved in the reaction.
D. It shows how the compounds actually exist in solution.

You exhale co2 which is produced during cellular respiration.  co2 combines with the water in your blood's plasma to make up one half of the body's most important buffer pair, carbonic acid.  the more physical activity you engage in, the more co2 your body is producing.  you can see this by putting some of the cabbage indicator in a glass and then blowing bubbles into it through a straw.  can you see a change in the color of the indicator?