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Aquatic Vegetation (Article) 10%
are small plants which do not have true leaves or flowers. Different types of algae take on different forms. Microscopic, single-celled, free-floating algae are called phytoplankton. This form is used .... Continue to Aquatic Vegetation >>
Fish Kills (Article) 10%
circulator to keep an area free of ice. Much of the water is then exposed to the air for oxygen absorption. Just cutting a hole in the ice is not effective since too little water gets exposed to the air .... Continue to Fish Kills >>
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