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BartSMP
[9]
3 years ago
12
The oldest known fossil belongs to the cyanobacteria. How did this fossil help to alter the atmosphere of ancient Earth's oxygen
levels?
Biology
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answer:
JulijaS
[17]
3 years ago
4
0
Cyanobacteria are autotrophic and perform photosynthesis. Photosynthetic organism produce oxygen in the exchange for Carbon Dioxide. Cyanobacteria caused oxygen levels to rise in Earths atmosphere.
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