Which of the following is NOT a common source of particulate matter?
A. volcanic dust
B. salt particulates
C. CFC's
D. pollen
Answer (2)
The least common source of volcanic dust is CFCs, as they are man-made chemicals unrelated to volcanic activity. Salt particulates and pollen are also not typical sources, but CFCs are distinctly different. Volcanic dust primarily consists of ash and debris from eruptions. ;
The source that is NOT common for particulate matter is CFCs. While volcanic dust, salt particulates, and pollen are natural or common sources of particulates, CFCs are man-made and do not relate to particulate matter. Thus, the correct choice is C. CFCs.
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