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Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..

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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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The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

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In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..

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DNA is a double helix structure comprised of nucleotides. A nucleotide, in turn, is made up of phosphate molecule, deoxy..