2006-12-26 12:33:35 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
They did from a meteor most likely, but there are other theories.
2006-12-26 12:36:43 · answer #1 · answered by Ryan S 5 · 2⤊ 1⤋
Oct. 20, 2006 — If you can't decide if you prefer meteor impacts, volcanoes or some other explanation for Earth's biggest mass extinction events, take heart: You no longer have to choose.
A new statistical study of mass extinctions throughout the history of life on Earth is backing up the idea that no single meteor, volcanic eruption or other lone gunman is ever to blame, even in the case of the Cretaceous-Tertiary event that brought the end of dinosaurs 65 million years ago.
Instead, the worst die-offs happen when some sort of interminable, multi-generational pressure on life is combined with a few powerful blows. It's what is now being called the press/pulse theory of mass extinctions. The theory "is essentially a more eloquent way of saying what I and many other paleontologists have been saying for many years," said Gerta Keller of Princeton University. "Namely that the impact-kill hypothesis is all wrong. Impacts alone could not have been the killing mechanism for the K-T or any of the other major mass extinctions."
In the late Cretaceous case massive volcanism — the Deccan Traps eruption in India — and attendant climate change, coincided with an impact that pushed highly stressed biota over the brink.
2006-12-26 12:48:51 · answer #2 · answered by Michael I 3 · 0⤊ 0⤋
In short, Dinosaurs could not adapted with changes happened in the earth.
2006-12-27 03:35:13 · answer #3 · answered by Mohamed K 2 · 0⤊ 0⤋
There are different versions of the story:
A big commit hit the earth and caused dust to cover the earth!
They say the commit is found somewhere in the US! (most probable version)
An extreme change in the weather took place, causing them to die
Well No one knows exactly
2006-12-26 23:13:22 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I've heard so many reasons. I saw a article last week that a meter hit the earth clouding the sky causing the dino to die.Then I heard that humans ate them so much they all died out
2006-12-26 12:36:06 · answer #5 · answered by Monet 6 · 0⤊ 1⤋
Same Struggle for existance, when the food became scarce a struggle started among them for food.
2006-12-26 13:11:43 · answer #6 · answered by moosa 5 · 0⤊ 0⤋
ask a bible thumper, they will tell you that these dinosaur bones in museums are a figment of your imagination, therefore didnt ever die, because they didnt exist......Hows that?
2006-12-26 12:37:16 · answer #7 · answered by waterboy 4 · 0⤊ 1⤋
i think Water boy is a little bitter...
probably asteroid or tar pits or volcanic ash...
i don't think we'll ever know for sure.
2006-12-26 12:43:07 · answer #8 · answered by Anonymous · 0⤊ 0⤋
They say a commit hit the earth and they all died.
2006-12-26 12:36:43 · answer #9 · answered by Anonymous · 0⤊ 1⤋
Asteriods killed them.
2006-12-26 12:41:20 · answer #10 · answered by Anonymous · 0⤊ 0⤋