Aqutic Life

Essay specific features

 

Issue:

Science

 

Written by:

Holly R

 

Date added:

April 4, 2015

 

Level:

 

Grade:

A

 

No of pages / words:

4 / 901

 

Was viewed:

9655 times

 

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Essay content:

Since life evolved in this atmosphere, carbon, oxygen, hydrogen, and nitrogen (major elements of nitrogen gas, carbon dioxide and water) make up 98% of the organic materials in living organisms. There was no oxygen in the early atmosphere, so all life existed in an anaerobic environment. Since no human was alive to document the events of the early earth, much of our information has been pieced together from studies of the fossil record...
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It is now believed that the earth 4.0 billion years ago was a very tumultuous place; there were violent electrical storms, radioactive substances emitting large quantities of energy, and molten rock and boiling water erupting from beneath the earth's surface. These forces broke apart the simple gases in the atmosphere, causing them to reorganize into more complex molecules...
displayed 300 characters

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