Biology · Ecology and Environment
Which one of the following is a primary air pollutant?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Smog
- 2Peroxyacetyl nitrate (PAN)
- 3Tropospheric Ozone
- 4Ash from a volcanic eruption✓
Correct answer
Ash from a volcanic eruption
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