According to the EPA,what are the four most dangerous indoor air pollutants?
A) tobacco smoke,formaldehyde,radon-222,and methane
B) tobacco smoke,formaldehyde,sulfur dioxide,and ultrafine particles
C) tobacco smoke,formaldehyde,radon-222,and ultrafine particles
D) tobacco smoke,formaldehyde,sulfur dioxide,and methane
E) tobacco smoke,formaldehyde,radon-222,and sulfur dioxide
Correct Answer:
Verified
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