Photosynthetic Organisms Using the Oxygen-Releasing Pathway Appeared on Earth About

question 65

Multiple Choice

Photosynthetic organisms using the oxygen-releasing pathway appeared on earth about ____ billion years ago.

• A) 1.3
• B) 1.8
• C) 2.3
• D) 2.7
• E) 3.8

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Definitions:

Rural Electrification Administration

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