The city of Los Angeles is on the coast and very near sea level.During a summer heat wave, several days of still weather allow heat and pollution to collect over the city and remain there, resulting in very high smog levels.This situation results from a(n)

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A temperature inversion is a situation in which a layer of warm air traps pollutants close to the surface, preventing them from rising and dispersing. This is exactly what happens during the described situation of still weather, high heat, and pollution accumulation in Los Angeles.

The City of Los Angeles Is on the Coast and Very