<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Dismiss
Skip Navigation
Our Terms of Use (click here to view) and Privacy Policy (click here to view) have changed. By continuing to use this site, you are agreeing to our new Terms of Use and Privacy Policy.

Early Atmosphere and Oceans

Earth's atmosphere originated from volcanic outgassing and comet impacts and evolved through photosynthesis.

Atoms Practice
%
Progress
Practice
Progress
%
Practice Now
Early Atmosphere and Oceans Practice
By CK-12
SCI.ESC.724
Please wait...
Please wait...