The success of photosynthetic bacteria, particularly cyanobacteria, led to an increased oxygen concentration in Earth’s atmosphere. This process, known as oxygenic photosynthesis, produced oxygen as a byproduct, significantly changing the composition of the atmosphere and enabling the evolution of aerobic (oxygen-using) organisms.
How did the success of photosynthetic bacteria change Earth’s atmosphere?(1 point)
Responses
decreased hydrogen concentration
decreased hydrogen concentration
increased hydrogen concentration
increased hydrogen concentration
decreased oxygen concentration
decreased oxygen concentration
increased oxygen concentration
1 answer