Documents Snowball Earth. Snow Ball Earth between 750 and 600 million years ago.

Slide 1Snowball Earth Slide 2 Snow Ball Earth between 750 and 600 million years ago. Slide 3 2 Billion years ago O2 began forming in the atmosphere Slide 4 http://www.atmosedu.com/Geol390/articles/RoyeretalCO2GSAToday%2704PhanerozoicClimate.pdf…

Documents The Earth’s Atmosphere and Climate The history of the atmosphere. What controls Earth’s climate?...

Slide 1 The Earth’s Atmosphere and Climate The history of the atmosphere. What controls Earth’s climate? How has climate changed in the past? Cretaceous to the present…