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There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..

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This tutorial describes the sigmoid curve, annual plant growth, tree growth, human growth, and insect growth as the grow..

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

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Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..