Presence of ____________ in water stream are deleterious to aquatic life?
Correct answer: D. All A., B. & C.
- A. Soluble and toxic organics
- B. Suspended solids
- C. Heavy metals and cyanides
- D. All A., B. & C.
Explanation
Toxic soluble organics, suspended solids, and heavy metals or cyanides can each harm aquatic organisms through toxicity, oxygen depletion, or physical interference with habitats. Therefore, all three categories are deleterious.
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