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Question
In large cities with heavy traffic, due to pollution by fuels of combustion a layer of cloud lays over the crowded areas. This cloud is called ______.
Fill in the Blanks
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Solution
In large cities with heavy traffic, due to pollution by fuels of combustion a layer of cloud lays over the crowded areas. This cloud is called smog.
Explanation:
In large cities with heavy traffic, fuel combustion releases nitrogen oxides and hydrocarbons, which react in sunlight to form a brownish photochemical smog, a cloud of pollutants over crowded areas.
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