Topic:  Acid Rain

http://www.epa.gov/acidrain/site_students/index.html

http://www.epa.gov/acidrainreport/

http://bqs.usgs.gov/precip/reports/arfs.htm

http://www.epa.gov/airtrends/acidrain.html

Topic: Stratospheric Ozone Depletion

http://www.epa.gov/docs/ozone/science/sc_fact.html

http://www.al.noaa.gov/WWWHD/pubdocs/StratO3.html

http://www.epa.gov/airtrends/strat.html

http://www.epa.gov/ozone/science/index.html

Topic: Greenhouse Effect

http://earthguide.ucsd.edu/earthguide/diagrams/greenhouse/

http://www.epa.gov/globalwarming/kids/greenhouse.html

http://www.pbs.org/wgbh/nova/ice/greenhouse.html

http://yosemite.epa.gov/oar/globalwarming.nsf/content/Climate.html

http://www.ngdc.noaa.gov/paleo/globalwarming/greeneffect.html

Topic: Smog Formation

http://www.arl.noaa.gov/ready/ozone/

http://www.epa.gov/airtrends/ozone.html

http://www.pbs.org/wgbh/nova/ice/greenhouse.html

http://bengu-pc2.njit.edu/trp-chem/air_html/chemsmog.htm

http://www.smogcity.com/welcome.htm  Read the Help section first to learn about the variables.

Carbon dioxide Absorption by the Ocean

http://news.nationalgeographic.com/news/2004/07/0715_040715_oceancarbon.html

http://www.marinebio.com/Oceans/oceanchemistry.asp

http://www.mbari.org/ghgases/

http://www.atmosphere.mpg.de/enid/on.html

http://www.metoffice.com/research/hadleycentre/models/carbon_cycle/index.html