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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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Photosynthesis – Photolysis and Carbon Fixation

Photosynthesis is the process that plants undertake to create organic materials from carbon dioxide and water, with the ..

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This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..

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This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..