Tuesday
July 29, 2014

Homework Help: Science

Posted by Help ASAP on Monday, September 30, 2013 at 9:32pm.

3) what 2 chemical contaminants that can be found in a freshwater source for each one

b) identify a source of contaminants that can be found in a freshwater source for each one.

4) briefly describe how a biological contaminant was able to get into groundwater wells at Walkerton.

please help asap (thanks!)

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