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This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..

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Hormones are chemical messengers produced by specialized glands and they were produced by switching on the genes designe..

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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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This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

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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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