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How did the Saber Tooth become extinct?
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#95963. Asked by Horseg3rl. (May 22 08 7:08 PM)
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In broad usage, the Holocene extinction event includes the notable disappearance of large mammals, known as megafauna, by the end of the last glacial period 9,000 to 13,000 years ago. Such disappearances have been considered as either a response to climate change, a result of the proliferation of modern humans, or both.
http://en.wikipedia.org/wiki/Holocene_extinction_event
Until recently, the term “Holocene Extinction” referred to a rather minor spate of extinction which took place at the beginning of the Holocene, with the end of the megafauna–woolly mammoths, North American horses, sabertooth cats, and other large mammals. This occured at the beginning of the Holocene, as humans were first moving into many new environments, like the Americas and Australia. This has led to a long-standing debate between “overkill” and “overchill.” Were the megafauna wiped out by climate change? Or by rapacious, brutal bands of overhunting human foragers? Both sides have their evidence, of course.
http://anthropik.com/2005/07/the-holocene-extinction/
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* The Holocene Extinction is occurring now.
Studies of the fossil record show that the normal “background” rate of extinction is about one species every four years. The current rate is between 30,000 and 100,000 per year.
You are now witnessing the fastest of the six great mass extinctions.
And this extinction, without a doubt, is the result of human population growth. By the end of this century, over five million species (half of the species on Earth now) will likely be gone.
“It’s not just species on islands or in rain forests or just birds or big charismatic mammals,” says Stuart Pimm, a conservation biologist researcher from the University of Tennessee. He notes fish, birds, insects, plants, and mammals. “It’s everything and it’s everywhere…it is a worldwide epidemic of extinctions.”
http://ezinearticles.com/?The-Ongoing-Holocene-Extinction&id=531079
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