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Tag Archives: Charles Darwin and Natural Selection

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The History of Life and The Theory of Evolution

ScienceBy William Anderson (Schoolworkhelper Editorial Team)September 14, 2010Leave a comment

The Record of Life *Everything changes over time.  The Earth has changed dramatically during the estimated 4.6 billion years it has existed. – All of the biodiversity present on Earth today is a result of the evolution of unicellular organisms that lived billions of years ago. – Evolution: the change in populations over time –         …

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