AP Environmental Sciencemediummcq1 pt
Which is a NATURAL source of air pollution?
A.Volcanic eruptions releasing SO₂ and ash
B.Coal power plants
C.Vehicle exhaust
D.Industrial solvents
Explanation
Core Concept
Volcanoes inject sulfur dioxide and particulates into the stratosphere naturally — sometimes cooling the planet for a year or two.
Correct Answer
AVolcanic eruptions releasing SO₂ and ash
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