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Multiple explanations for the extinction of dinosaurs

Image caption:
The evidence supports the idea that a giant asteroid struck Earth at the end of the Cretaceous, but additional explanations (volcanic activity, global climate change, sea level change, and tectonic movements) may also have played a role.

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Image credit:
If you use this image in your own non-commercial project please credit it to the University of California Museum of Paleontology's Understanding Science (http://www.understandingscience.org).

 


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