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Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

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Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..

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The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

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Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..

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Abiotic and Biotic Factors

This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..

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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..