Your group has just collected and identified the following organisms:
22 crane fly larvae, 15...
Biology, 27.11.2019 19:31 unknownyobutt21
Your group has just collected and identified the following organisms:
22 crane fly larvae, 15 midges, 4 dragonfly nymphs, 10 sowbug, 11 aquatic worms, 33 caddisfly larvae, 4 waterpennies, and 1 left handed snails.
what is the pollution tolerance index value?
a. 1.0 = excellent water quality
b. 2.1= good water quality
c. 2.4 = good water quality
d. 2.5 = good water quality
Answers: 2
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