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

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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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Apart from vitamins, the human body also requires high energy sources such as carbohydrates and fats. If you want an ove..

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Geological Periods

Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..

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This tutorial looks at the mutation at the gene level and the harm it may bring. Learn about single nucleotide polymorph..