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    Exam 14: Energy Conversion: Mitochondria and Chloroplasts
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    Which of the Following Probably Occurred First on Earth
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Which of the Following Probably Occurred First on Earth

Question 46

Question 46

Multiple Choice

Which of the following probably occurred first on Earth?


A) H₂O photosynthesis
B) H₂S photosynthesis
C) O₂ respiration
D) Eukaryotic photosynthesis

Correct Answer:

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