Homework Help: environmental science

Posted by tia on Saturday, July 21, 2012 at 9:39pm.

what are the sources of the following:
carbon dioxide CO2
chlorofluorocarbons CFC's
ground level ozone

environmental science - Ms. Sue, Saturday, July 21, 2012 at 9:54pm
http://en.wikipedia.org/wiki/Carbon_dioxide_in_Earth%27s_atmosphere#Sources_of_carbon_dioxide

http://www.pollutionissues.com/Br-Co/CFCs-Chlorofluorocarbons.html#b

http://www.airqualityontario.com/science/pollutants/ozone.php

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