sos -00 40% 25 Declining National Air Pollutant Concentration Averages 00 -04-20 S Declining National Air Pollutant Emis

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Sos 00 40 25 Declining National Air Pollutant Concentration Averages 00 04 20 S Declining National Air Pollutant Emis 1 (34.88 KiB) Viewed 30 times

Sos 00 40 25 Declining National Air Pollutant Concentration Averages 00 04 20 S Declining National Air Pollutant Emis 2 (15.68 KiB) Viewed 30 times

Sos 00 40 25 Declining National Air Pollutant Concentration Averages 00 04 20 S Declining National Air Pollutant Emis 3 (24.33 KiB) Viewed 30 times

Sos 00 40 25 Declining National Air Pollutant Concentration Averages 00 04 20 S Declining National Air Pollutant Emis 4 (28.12 KiB) Viewed 30 times

sos -00 40% 25 Declining National Air Pollutant Concentration Averages 00 -04-20 S Declining National Air Pollutant Emissions PMIS au 2014 2016 4 TE
D Question 1 3 pts What is the total change in SO₂ emissions since 1990?
D Question 2 3 pts What are the units used for the national standard line? How do the measurements in 2020 compare to that in 1990?
Question 4 3 pts Choose one other measure/pollutants in the list on the left side of the page, and repeat the questions #1-3 above to understand pollution levels for other pollutants.