If shane and susan both push on a box with a force of 25n, but in opposite directions, what will happen to the box?

a) the box will not move.
b) the box will slide toward shane.
c) the box will slide toward susan.
d) the box will be perpendicular to both shane and susan.

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?