Which is the metal, whose elevated concentration is harmful to fish as it clogs the gills thus causing suffocation?
Correct answer: D. Al
- A. Na
- B. Pb
- C. Zn
- D. Al
Explanation
Elevated levels of aluminum can affect some species' ability to regulate ions, like salts, and inhibit respiratory functions, like breathing. Aluminum can accumulate on the surface of a fish's gill, leading to respiratory dysfunction, and possibly death.
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