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This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..

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Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..

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Independent Assortment and Crossing Over

This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..

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

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The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..

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This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..