Description: The addition of oxygen into Earth's atmosphere by cyannobacteria led to the creation of banded iron formations. Oxygen was poisonous to life at that time. Once cells could utilize oxygen, they had much more energy at their disposal.
Keywords: burning, house, addition, oxygen, earth, atmosphere, cyannobacteria, led, creation, banded, iron, formations, poisonous, life, time, cells, utilize, energy, disposal
Created by: Glenn Dolphin Added: 2005-09-01
Earth Science (Earth History and Geologic Time) Views: 2114
File: Be sure you have an application to open this file type before downloading. Click here for more information.
The continued strength of this site depends on teacher contributions. Please help make this site stronger by submitting a file today. Submitting is easy, simply click here to get started. Thanks!
For classroom use under a: Creative Commons License