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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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The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..

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This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..

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Types and Causes of Brain Damage

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

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