Answer: mercury.
- A carbon dioxide
- B ozone
- C mercury
- D nitrogen
Correct answer: C. mercury
Explanation: Minamata disease results from mercury poisoning, famously through consumption of fish contaminated with mercury that biomagnified along the aquatic food chain.
Sunlight passes through the atmosphere and warms the surface; the surface re-radiates this energy as infrared heat, which greenhouse gases (CO₂, CH₄, water vapour) absorb and trap - a naturally beneficial process that intensifies into global warming as gas concentrations rise from human activity.
Concept context
Pollution, global warming, ozone depletion, deforestation, and sustainability. Important for NEET and general awareness.