Works Cited
"BAAQMD - The Air District." BAAQMD - The Air District. Web. 22 Jan. 2015. <http://www.baaqmd.gov/The-Air-District.aspx>.
"Spare the Air." Spare the Air. Bay Area Air Quality Management District. Web. 22 Jan. 2015. <http://sparetheair.org>.
Pictures:
http://americandrivingvacations.com/atc2015/wp-content/uploads/2013/12/CA-San-Francisco-2.jpg
http://www.damianpeach.com/images/articles/ultimate/fig01a.jpg
http://www.epa.gov/research/images/pm2_5_graphic.jpg
http://pic.templetons.com/brad/pano/sfba/bridge-vista.jpg
"Spare the Air." Spare the Air. Bay Area Air Quality Management District. Web. 22 Jan. 2015. <http://sparetheair.org>.
Pictures:
http://americandrivingvacations.com/atc2015/wp-content/uploads/2013/12/CA-San-Francisco-2.jpg
http://www.damianpeach.com/images/articles/ultimate/fig01a.jpg
http://www.epa.gov/research/images/pm2_5_graphic.jpg
http://pic.templetons.com/brad/pano/sfba/bridge-vista.jpg