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Lentic or still water communities can vary greatly in appearance -- from a small temporary puddle to a large lake. The s..

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Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..

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This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..

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DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..

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A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..

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Genes are expressed through the process of protein synthesis. This elaborate tutorial provides an in-depth review of the..