Which one of following is the <strong>MOST</strong> important factor for the formulation of smog ?
- A. Long winter nights
- B. Formation of an 'inversion lid' ✓
- C. Presence of many air pollutant resources
- D. Rapid fall in temperature with increasing height above the sea level
Correct Answer: B. Formation of an 'inversion lid'
Explanation
A temperature inversion ('inversion lid') occurs when a layer of warm air traps cooler air near the surface, acting as a lid that prevents atmospheric mixing and heavily concentrating smog and pollutants at ground level.
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