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    Question

    Which substances are primarily responsible for the

    formation of ground-level ozone (GLO)?
    A Carbon monoxide and sulfur dioxide Correct Answer Incorrect Answer
    B Oxides of nitrogen and volatile organic compounds Correct Answer Incorrect Answer
    C Methane and carbon dioxide Correct Answer Incorrect Answer
    D Chlorofluorocarbons and particulate matter Correct Answer Incorrect Answer

    Solution

    Ground-level ozone is created by the photochemical reactions between oxides of nitrogen and volatile organic compounds, particularly under the influence of sunlight, leading to a significant air pollutant especially in urban areas.

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