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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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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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Principles of Hormonal Control Systems

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

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This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..

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Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..

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Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..