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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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In this tutorial, the works of Carl Gustav Jung and Sigmund Freud are described. Both of them actively pursued the way h..

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The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

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Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..

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Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..

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Digestion and Absorption of Food

The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..