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decreased oxygen concentration
decreased oxygen concentration
decreased hydrogen concentration
decreased hydrogen concentration
increased hydrogen concentration
increased hydrogen concentration
increased oxygen concentration
1 answer
The correct response is:
increased oxygen concentration
Photosynthetic bacteria, such as cyanobacteria, produced oxygen as a byproduct of photosynthesis, significantly increasing the Earth's atmospheric oxygen concentration over time. This process is known as the Great Oxygenation Event.
1 answer
1 answer
2 answers
2 answers