Water pollution is caused by:
Correct answer: C. Industrial effluents
- A. Ammonia
- B. Phytoplankton
- C. Industrial effluents
- D. Smoke
Explanation
Industrial effluents introduce chemicals, heavy metals and organic wastes directly into water bodies, making them a major cause of water pollution. Smoke is primarily an air pollutant, while phytoplankton are not inherently pollutants.
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