Multiple Choice
What are the concerns about Peroxyacetyl nitrates (PANs) in the lower troposphere?
A) These are principally related to sulfur dioxides.
B) These are formed by particulates such as dust,dirt,soot,and ash.
C) These damage and kill plant tissue but do not appear to affect people.
D) These are emitted from the tail pipes of automobiles; i.e.,it comes directly from automobile exhaust.
Correct Answer:
Verified
Correct Answer:
Verified
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