Biological oxidation ponds remove organic matters present in the polluted water by _______________?
Correct answer: B. Both A. & B.
- A. Using the activities of bacteria and other micro organisms
- B. Both A. & B.
- C. Aerobic oxidation
- D. Neither A. nor B.
Explanation
Oxidation ponds rely on microorganisms, especially bacteria and algae, to biologically degrade organic matter; aerobic oxidation is the main process near the pond surface. Thus both statements describe the treatment mechanism.
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