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The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..

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Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..

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Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..

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While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..

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Neurology of Illusions

Illusions are the perceptions and sensory data obtained from situations in which human error prevents us from seeing the..

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Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..