Q. The disappearance of the plants and animals is due to the _________ in water.
A. Nitrogen depletion
B. Chlorine depletion
C. Oxygen depletion
D. Ozone depletion
Answer: Oxygen depletion
A. Nitrogen depletion
B. Chlorine depletion
C. Oxygen depletion
D. Ozone depletion
Answer: Oxygen depletion