Increasing oxygen concentrations in the Earth's atmosphere is linked to the evolution of

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Cyanobacteria played a crucial role in increasing oxygen levels in Earth's atmosphere through the process of photosynthesis, which produces oxygen as a byproduct. This event, known as the Great Oxygenation Event, significantly altered the composition of the atmosphere and enabled the evolution of aerobic (oxygen-breathing) organisms.

Increasing Oxygen Concentrations in the Earth's Atmosphere Is Linked to the Evolution