Extinction Periods

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Dinosaurs have been extinct for about 6.5x10^7 years, while Neanderthals have been extinct for about 3.0x10^4 years. About how
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Dinosaurs has been extinct for 6.5*10^7 years and Neanderthals has been fir 3.0*10^4 years about how many times longer have
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2. asked anonymously
3. 13 views

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