If a Water Beetle Has Used Up Half of the Oxygen

Multiple Choice

If a water beetle has used up half of the oxygen in its air bubble, the concentration of oxygen in the bubble is _______ the concentration of oxygen in the water. The partial pressure of oxygen in the bubble is _______ the partial pressure of oxygen in the water. Therefore, oxygen will move from the _______.

A) greater than; less than; water into the bubble
B) less than; less than; bubble into the water
C) less than; less than; water into the bubble
D) greater than; less than; bubble into the water