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Staying Alive: Extinction Risk: Introduction to Extinction and Extinction Bias
2018Data driven curriculum module from Dryad Digital ...
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Mass Extinctions Face Downsizing, Extinction
Science, 2001A bunch of sea urchins turned up in the Cretaceous like a bad penny, millions of years after they were believed to have gone extinct. Their reappearance casts doubt on the existence of one long-presumed mass extinction and by implication the existence of several others.
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2023
Abstract Based on fossil mammals from North America, extinction rates since the last mass extinction, but before human influences, are estimated at 0.4 species/species/million years, which implies a species typically persisted for about 2.5 million years.
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Abstract Based on fossil mammals from North America, extinction rates since the last mass extinction, but before human influences, are estimated at 0.4 species/species/million years, which implies a species typically persisted for about 2.5 million years.
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2013
Eventually the human race will become extinct, like any other species. Ultimately, we should be concerned with what we can do toward our species goals within the one-to-two million-years lifespan of our species. Our individual life spans are not meaningless even though we know they will end.
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Eventually the human race will become extinct, like any other species. Ultimately, we should be concerned with what we can do toward our species goals within the one-to-two million-years lifespan of our species. Our individual life spans are not meaningless even though we know they will end.
openaire +2 more sources