how do you think the dinosaurs became extinct and why.

Question: how do you think the dinosaurs became extinct and why.

Asked by italianmaster to MarkF, Mark, Michael, Panos, Sarah on 18 Jun 2010 in Categories: General.
- Mark Fogg answered on 17 Jun 2010:
  
  I know exactly what you mean, but first, not all dinosaurs are extinct, we still have crocodiles and the evidence demonstrates that Birds evolved from dinosaurs. So you can argue with, some justification, that they are still with us.
  
  As for the 99.9% of dinosaurs we no longer see around us, the best evidence is for a large meteor impact around 65 million years ago having had the greatest effect, though there may have been other additional factors involved. Furthermore, many species had evolved and become extinct long before then.
- Mark Travis answered on 17 Jun 2010:
  
  No expert, but probably a big metorite triggered changes that killed them off.
- Panos Soultanas answered on 18 Jun 2010:
  
  The thories say because of an asteroid impact that devastated most of living life. They were too big and awkward and not adapted very well to survive the climatic changes that followed for several years after the asteroid impact.
- Michael Loughlin answered on 18 Jun 2010:
  
  Big rock hit the earth huge amounts of ash goes up coooing the earth so only small and warm blooded animals survive
- Sarah Burl answered on 18 Jun 2010:
  
  The most common theory is the asteroid theory based on the fact there was an asteroid collison about 65 milion years ago that would have wiped out the dinasours quickly rather than over a period of time. However some scientists disagree with this and think the dinasours had been extinct before this time.
  I don’t know!

Question: how do you think the dinosaurs became extinct and why.

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