Extinction of Dinosaurs

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Issue:

Science

 

Written by:

Cynthia B

 

Date added:

April 20, 2017

 

Level:

University

 

Grade:

A

 

No of pages / words:

4 / 960

 

Was viewed:

10286 times

 

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Essay content:

Though there is not one definitive explanation to explain dinosaurs' extinction, there are various theories that attempt to account for the mystery of their extinction. The theories that explain their extinction at the end of the Cretaceous period are the asteroid, the volcanoes, and the major climatic changes...
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The impact was proposed by a Professor of geology from Berkeley, California, Walter Alvarez. Alvarez's conclusion about the extinction was "A giant meteor had struck down the world of dinosaurs" (Bakker 432). Alvarez believed that "?a huge meteor (or asteroid), smashing into the earth at the end of the Cretaceous, would blanket an immense area of the earth with its extraterrestrial cargo of iridium because the explosion of the celestial mass would send up vast clouds, full of iridium-rich dust" (Bakker 432)...
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