Choose two chemical contaminants that could be found in a freshwater source. For each one,
Identify a source of the contaminant.
Describe how the contaminant got into the water.

9) Which is an example of microbial contamination?
a) Broken Glass
b) Lead
C) Bacteria
d) Metal Fillings


10) are chemical contaminants.
a) Insect fragments
B) Microbes
c) Pesticides
d) Mold


11) Chemical contaminants enter the food supply through .
a) industrial waste
b) spraying crops in the fields
c) water supplies
D) All of the above.