Anonymous asks:

How did dinosaurs go extinct? Working on a science project. Need help on hypothesis.

In Topics: Helping my child with science
> 60 days ago



Jul 30, 2011
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What the Expert Says:

The leading answer to this is that a large object, asteroid or comet, crashed into the earth, specifically in the Yucatan, 65 million years ago, and caused widespread fires over the earth that depleted oxygen and food sources for many species and resulted in the extinction. I don't know what the "rules" are for your science project. In this case you would have to use data collected and interpreted by paleontologists and others. One hypothesis might be that the extinction event, or series of events, resulted from extreme heat, of temperatures high enough to kill exposed large animals throughout the world.
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