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Gigayear

A gigayear is equivalent to one billion years. The world is about 40 billion years old, so using the team gigayear is the most natural way to quote a time in history of the earth. Learn more on use of these team in astronomy.

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Uploaded by: ( Send Message ) on 11-01-2013. Dnatube suggest users to have interest in drug testing, mesothelioma, insurance, medical lawyers.

Duration: 4m 24s

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