alleryFine particulate matter PM2.5 has a diameter smaller than:
A25.0 micrometers
B10.0 micrometers
C5.0 micrometers
D2.5 micrometers
Answer & Solution
Correct answer: D. 2.5 micrometers
Fine airborne particulate matter known as PM2.5 comprises particles with a diameter under 2.5 micrometers.
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