Causes of Air Pollution
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Questions and Answers

What is a primary pollutant?

  • A pollutant derived only from human activities
  • A pollutant that is a result of volcanic eruptions
  • A pollutant formed in the atmosphere by chemical reactions with natural components
  • A pollutant put directly into the atmosphere by human or natural activity (correct)

    • Which of the following is a secondary pollutant?

  • Carbon monoxide
  • Sulfur dioxide
  • Nitrogen oxide
  • Ground-level ozone (correct)

    • Which activity contributes most to nitrogen oxide emissions?

  • Volcanic eruptions
  • Power plants (correct)
  • Household products
  • Refineries

    • What is the major source of sulfur dioxide emissions?

    <p>Coal-burning power plants</p> Signup and view all the answers

    Which pollutant is directly emitted by vehicles and gas stations?

    <p>Volatile Organic Compounds (VOCs)</p> Signup and view all the answers

    How does ground-level ozone form?

    <p>By emission from cars reacting with UV rays of the sun</p> Signup and view all the answers

    What is a common source of fine particulate matter in the air?

    <p>Wood-burning fireplaces</p> Signup and view all the answers

    Which legislation gives the EPA the authority to regulate vehicle emissions in the United States?

    <p>The Clean Air Act</p> Signup and view all the answers

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