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Our survival depends on cyanobacteria, the microorganisms that have fundamentally altered the Earth’s atmosphere. They released oxygen and filled the atmosphere with oxygen for the first time about 2.4 billion years ago. You taught me happy things in life mom face mask. However, the stone revealed, oxygen concentration increased – decreased like a roller coaster for 3 billion years, until it was stabilized in the Cambrian period, about 541 million years ago. So, did the bacteria determine the air component or was there another factor in action? Finding the answer to this mystery is an important factor in deciphering the history of life on our planet.
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