Biology, 05.05.2020 23:41 SuBzErO24

2 points
The EPA sets national air quality standards for common air pollutants. The
graph shows the change in the concentrations of these pollutants over time.
Which pollutant have the air quality standards had the greatest impact on?
Monitored concentrations
of pollutants
PM
Normaland Concert
1995
199 200 2005 2010
Year
O A. Ozone
B. NO
OC. PMO
O D. Lead

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The EPA sets national air quality standards for common air pollutants. The
grap...

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