To view a printable version of the Pre-Test, click here.

Select the best response to the questions below.

1. If a large amount of nitrates are present in a body of water, what color will the water usually be?
a) Blue
b) White
c) Green
d) Purple

2. What water quality factor is indirectly affected by having an excess of nitrates present in the water?
a) Turbulence
b) Temperature
c) Bubbles
d) Dissolved oxygen