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With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..

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

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

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Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..

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It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..