Encyclopedia > Paleoproterozoic

  Article Content

Paleoproterozoic

The Paleoproterozoic is the first of the three sub-divisions of the Proterozoic. This is when the continents first stabilized. This is also when the atmospheric oxygen increased. Cyanobacteria were responsible for the increase.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Quackery

... media. The regulatory committees of medical doctors, are doctors themselves. Quackery doesn't have to deal with their wrongs of the past, they don't call themselves quacks, ...

 
 
 
This page was created in 39 ms