18.What ingredients used to treat ear mites is also very toxic to fish? A.Pyrethrins B. Ivermectin C. Rotenone D. Selamectin
18. What ingredients used to treat ear mites is also very toxic to fish?
B. Ivermectin
Rationale:
The active ingredient used in the treatment of ear mites is ivermectin which is an antiparasitic used in the topical preparation. Ivermectin is highly toxic to fish and invertebrates. So option B is correct.
Pyrethrins, Rotenone, Selamectin also used as an active ingredient in the treatment of ear mites, but these are not toxic to fish. Hence options A,C, D are incorrect.
18.What ingredients used to treat ear mites is also very toxic to fish? A.Pyrethrins B. Ivermectin...
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