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Stirring up rocks | by USFWS/Southeast
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Stirring up rocks

Using a D-net, the students group into teams of two or three to collect macroinvertebrates from the river, then identify their find and get an idea of what that tells about the quality of the stream.

 

Credit: Gary Peeples/USFWS

www.fws.gov/asheville/

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Taken on May 31, 2011