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Biology, 09.12.2020 21:20 courtneygaffney4755

Which is a true statement about air quality? Good air quality is shown by high levels of smog.
Bacteria is a major cause of poor air quality.
Water treatment plants measure the air quality.
The EPA measures air pollution levels daily.

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Which is a true statement about air quality? Good air quality is shown by high levels of smog.
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