work cited
Cabanatuan, Michael. “Here's When Bay Area Air Quality Will Improve, Thanks to Windstorm.” SFChronicle.com, San Francisco Chronicle, 29 Oct. 2019, www.sfchronicle.com/california-wildfires/article/Here-s-when-Bay-Area-air-quality-will-improve-14571005.php.
“Improving Indoor Air Quality.” EPA, Environmental Protection Agency, 15 Oct. 2019, www.epa.gov/indoor-air-quality-iaq/improving-indoor-air-quality.