Glossary
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Intolerant - Sensitive to pollution.
Very Intolerant - Very Sensitive to pollution.
Tolerant - Not sensitive to pollution.
Very Tolerant - Not sensitive at all to pollution.
Benthic Macroinvertebrates - A big bug with no back bone that lives at the bottom of the stream.
500 Micron mesh net - 500 Millionth of a meter very good quality net.