Multiple Choice
Which statement about oxygen is true?
A) It was prevalent in the atmosphere of Earth at the origin of life, around 3.8 bya.
B) It allowed for the evolution of autotrophic organisms.
C) It is advantageous to every type of organism that has lived on Earth.
D) It made aerobic heterotrophic life possible.
E) It is a product of fermentation.
Correct Answer:

Verified
Correct Answer:
Verified
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