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Photochemical smog is a type of air pollution formed when sunlight interacts with certain pollutants in the atmosphere, primarily nitrogen oxides (NO and NO₂) and volatile organic compounds (VOCs) emitted from vehicles, industrial activities, and other combustion processes. The formation of photochemical smog is a series of complex photochemical reactions driven by solar radiation. The process begins with the emission of nitrogen oxides (NOx) and _________ ____ ______ ____ ____ _______ ____ ____ __________.
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