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Life, as we know it today, is presumed to have started in the sea and many of them were likely eukaryotic animal-like or..

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This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..

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Plant organs are comprised of tissues working together for a common function. The different types of plant tissues are m..

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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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