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Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

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There are many environmental factors that arise due to the usage of water in one way or another and for every action tha..

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The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..

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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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Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..

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