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Plants and animals need elements, such as nitrogen, phosphorus, potassium, and magnesium for proper growth and developme..

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Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..

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

IQ, Creativity and Learning
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Human intelligence provided the means to utilize abstract ideas and implement reasoning. This tutorial takes a further l..