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Tree Rings, Ice Cores, and Varves
Introduces three methods scientists use to determine the absolute age of a material: tree rings, ice cores, and varves.
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Evidence About Earth's Past
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Ice Core Secrets Could Reveal Answers to Global Warming
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This video follows scientist Jim White as he studies old ice cores in order to find out what may happen in the future in relation to global warming.
SCI.ESC.511 (Tree Rings, Ice Cores, and Varves - Earth Science)
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