A good indicator of water quality is the number of
a. ducks
b. fish
c. turtles
d. coliform bacteria
e. protozoa
Answer: D
A good indicator of water quality is the number of
a. ducks
b. fish
c. turtles
d. coliform bacteria
e. protozoa
a. ducks
b. fish
c. turtles
d. coliform bacteria
e. protozoa
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