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Pramila Pramila
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6 years ago
Early Earth (4.5 billion years ago) ________.
A) had more abundant and complex life forms compared to today's Earth
B) was stagnant and lifeless
C) was virtually void of oxygen
D) had a very similar atmosphere to today's Earth but lacked water
E) had very high levels of oxygen
Textbook 
Environment: The Science Behind the Stories, Canadian Edition

Environment: The Science Behind the Stories, Canadian Edition


Edition: 3rd
Authors:
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6 years ago
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