What happens to an atom of oxygen (O) when it forms an ionic bond in which it has the same electron configuration as the noble gas neon? A.
It accepts two electrons.
B.
It gives up two electrons.
C.
It accepts one electron.
D.
It gives up one electron.

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?