Which toxic neurological disorder was caused by industrial discharge of Methylmercury into the bay in Japan in the 1950s?
Answer and explanation
Correct answer: D. Minamata disease
- Step 1: Chemical plants discharged mercury into Minamata Bay, where aquatic microbes biomagnified it into organic methylmercury. Step 2. Consumption of contaminated fish caused profound neurological degeneration, ataxia, numbness, and congenital birth defects (Minamata disease). Answer: Minamata disease. Why not the others: Itai-itai is cadmium poisoning; Blackfoot disease is caused by chronic arsenic poisoning in drinking water; Saturnism is lead poisoning.
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