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Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

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A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..

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Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..

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Regulation of Biological Systems

Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population l..

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Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..

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Pollution in Freshwater Ecosystems

There are many environmental factors that arise due to the usage of water in one way or another and for every action tha..