Multiple Choice
Which of the following is likely the greatest impact that organisms have ever had on Earth?
A) Early cyanobacteria released hydrogen to Earth's atmosphere during the water-splitting step of photosynthesis.
B) Early cyanobacteria released carbon dioxide to Earth's atmosphere during the water-splitting step of photosynthesis.
C) Early cyanobacteria released oxygen to Earth's atmosphere during the water-splitting step of photosynthesis.
D) Early cyanobacteria released nitrogen to Earth's atmosphere during the water-splitting step of photosynthesis.
Correct Answer:
Verified
Correct Answer:
Verified
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