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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..

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

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The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..

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Consciousness and Behavior

Human consciousness and behavior are an interesting topic since they are determined and controlled by the brain. Conscio..

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Running Water Freshwater Communities

This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..

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Human Reproduction and Fertilization

For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..