Which atom would be neutral? an oxygen atom with 9 electrons, 8 protons, and 8 neutrons
an oxygen atom with 4 electrons, 6 protons, and 4 neutrons
an oxygen atom with 8 electrons, 8 protons, and 9 neutrons
an oxygen atom with 16 electrons, 18 protons, and 16 neutrons

Amixture with the same composition throughout is!

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?

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?