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This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..

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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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Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..

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The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..