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The top documents tagged [mya triassic]
Cambrian-Ordovician Periods
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History of life on earth 4.6 bya—when it all began (Precambrian) Earth’s atmosphere changed over time First organisms were likely prokaryotes (3.4 by old
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Future Evolutionary Flexibility and Biodiversity Biodiversity
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Past Climate Change and Species Responses Melissa Marquez
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asthenosphere lithosphere mesosphere Lithosphere (hard) Asthenosphere (soft) Mesosphere
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Michigan Trees By: Andrea Berry Michigan Water Stewardship Program
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