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Assessment
What is the primary source of outdoor air pollution in urban areas?
Transportation emissions
Industrial waste
Natural sources like wildfires
Household cleaning products
Which of the following pollutants is most commonly associated with adverse respiratory health effects?
Carbon monoxide
Particulate matter (PM)
Ozone
Sulfur dioxide
What is the recommended air quality standard for particulate matter (PM2.5) over a 24-hour period according to the EPA?
50 µg/m³
35 µg/m³
15 µg/m³
25 µg/m³
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