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

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Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

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Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..