What are the signs of a healthy lake?

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Offline Vadermort

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What are the signs of a healthy lake?
« on: 21/05/2006 05:18:46 »
Hey guys.
Im going to do an experiment on how healthy the water in a lake is by searching for microscopic organisms under a microscope. Can anyone tell me what to look for pictures, descriptions? anything welcome


b.s
« Last Edit: 01/07/2008 11:19:51 by BenV »
b.s