Environment & Ecology · Environmental Science
How do primary air pollutants enter the atmosphere, and which group correctly identifies them?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Released only from biological decay; examples include Oxygen and Nitrogen
- 2Generated through solar radiation; examples include Acid Rain and Smog
- 3Emitted directly from distinct sources; examples include CO, HCs, SO₂, and NO✓
- 4Formed via atmospheric reactions; examples include Ozone and PAN
Correct answer
Emitted directly from distinct sources; examples include CO, HCs, SO₂, and NO
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