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Phanerozoic 300 mya - PowerPoint PPT Presentation

Snowball Earth

Snowball Earth. Snow Ball Earth between 750 and 600 million years ago. 2 Billion years ago O2 began forming in the atmosphere. CO2 has been a driver of Climate for Millions of years. (phanerozoic 550 Mya to present) There have been large ice sheets during the Phanerozoic ~300 Mya

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Phanerozoic 300 mya - PowerPoint PPT Presentation

Snowball Earth