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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!)

  • Science - ,

    wow 4 years u did this did you loose a mark for not doing this question?

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