NEET BIOLOGY

Detailed explanation-1: -On December 5, 1952, people in London, England, began to suffer respiratory illnesses after breathing thick smog. This deadly weather event, the Great Smog, would last almost a week and cost between 4, 000-10, 000 lives. Smog is a type of air pollution, created by industrial output and natural weather patterns.

Detailed explanation-2: -Sulfurous smog (London smog) Therefore, cities located close to the equator or in the subtropical sphere are not affected by it. This type of air pollution emerges as a result of burning coal, the accumulation of particulate matter from industrial activity and a drop in temperature.

Detailed explanation-3: -Smog is air pollution that reduces visibility. The term “smog” was first used in the early 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. Smog was common in industrial areas, and remains a familiar sight in some cities today.

Detailed explanation-4: -London had experienced these types of smog before. They were called “pea-soupers” due to their yellowish-brown appearance. Today, pea-soupers are known as sulphurous smog or “London smog”. These result from a high concentration of sulphur oxides (SOx) in the atmosphere from fossil fuels high in sulphur, such as coal.