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Extinction Of Dinosaurs
Start of Term Paper
Biology
6th Period
Two-hundred and thirty million years ago the first dinosaur-like
creature roamed the earth. Within five million years it could be considered a
dinosaur. They were soon at the top of the food chain. They populated every
c .... Middle of Term Paper
... became extinct.
Paleontologists have proposed scenarios that could have caused these
extinctions. One such scenario involves the growing number of small mammals
which ate dinosaur eggs, and therefore caused the dinosaurs' birth rate to drop.
The birth rate became smaller than the death rate and the dinosaurs died out.
This, however, is not a plausible scenario. This would only account for the
dinosaurs, but not all the other creatures of that time. Paleontologists needed
to come up with a more plausible and devastating theory that would include the
other creatures that died out 65 million years ago.
There have been several major theor ... |
| Number of Words: 684 |
Approximate Pages: 3 |
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