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Environment
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Which of these is a major pollutant causing smog in urban areas?
Verified Answer
Oxygen
Quiz Options
- Oxygen
- Ozone
- Nitrogen
- Water Vapor
Explanation & Context
Ground-level ozone is a key component of smog, formed when pollutants like nitrogen oxides and volatile organic compounds react in sunlight.
Also Asked As / Semantic Queries
"What of these is a major pollutant causing smog in urban areas?"
Authoritative Sources & Citations
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