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Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..

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A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..

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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..

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

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Plant Biology

Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

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Homeostatic Mechanisms and Cellular Communication

Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..