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Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..

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Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..

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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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Chemical Composition of the Body

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

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A Balanced Diet – Carbohydrates and Fat

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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The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..