Multiple Choice
The accumulation of free oxygen in the atmosphere
A) was a result of the accumulation of a by-product of a type of photosynthesis.
B) prevented the further spontaneous generation of life.
C) provided the opportunity to extract more energy through aerobic respiration.
D) did not occur immediately after the earth was formed.
E) did all of these.
Correct Answer:

Verified
Correct Answer:
Verified
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