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There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..

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Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..

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Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..

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Vascular Plants: Ferns and Relatives

Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..

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