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Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..

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Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...

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Growth Patterns

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

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The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..

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Gregor Mendel, an Austrian monk, is most famous in this field for his study of the phenotype of pea plants, including ..