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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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Meiosis is a form of cell division that creates gametes. It is comprised of two divisions that in the end, the resulting..

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Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..

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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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Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..

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