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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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naturelle naturelle
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7 years ago
The modern atmosphere, with the amount of oxygen that exists today, developed as early as 600 million years ago. 
True or false?
Textbook 
Geosystems: An Introduction to Physical Geography

Geosystems: An Introduction to Physical Geography


Edition: 7th
Author:
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jo170jo170
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7 years ago
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naturelle Author
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#2
6 years ago
Just got feedback from my professor, thanks for answering correctly
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