AP Biology MCQ
Studying Life
The initial accumulation of oxygen in the atmosphere was the result of photosynthesis from an organism most like modern
The initial accumulation of oxygen in the atmosphere was the result of photosynthesis from an organism most like modern
The initial accumulation of oxygen in the atmosphere was the result of photosynthesis from an organism most like modern
a. cyanobacteria.
b. algae.
c. mosses.
d. kelp.
e. eukaryotes.
Answer: A
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