Presence of __________ in water stream are deleterious to aquatic life.
A. Soluble and toxic organics
B. Suspended solids
C. Heavy metals and cynides
D. All of the above
Answer: Option D
Presence of __________ in water stream are deleterious to aquatic life.
A. Soluble and toxic organics
B. Suspended solids
C. Heavy metals and cynides
D. All of the above
Answer: Option D
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