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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..

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Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

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The Conscious & Unconscious Nervous System

This tutorial elaborates on how the nervous system works, particularly at the tissue level of the brain. There are three..

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Human Neurology deals essentially with the nervous system of humans. It also features the various theories put forward b..

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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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Psychiatry & Mental Disorders

Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..