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"dissolved oxygen-in water." important water quality factors. 2006. <http://www.h2ou.com/h2wtrqual.htm#Oxygen<font size="5"><img src="file:///G3/Users/per2/Desktop/G3-pr/dead-fish.jpg" width="500" height="376"></font>4.0

Grable , Lisa Leonor . "Water What-ifs Water Quality and Dissolved Oxygen." Water Quality and Dissolved Oxygen. 6 Feb 2008 <http://www.ncsu.edu/sciencejunction/depot/experiments/water/lessons/do/>.

chimacum middle school/feb 8-2008