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Stromatolites are layered sedimentary formations created by the activity of microbial mats, primarily cyanobacteria, which trap and bind sediments over time. They are among the oldest evidence of life on Earth, dating back over 3.5 billion years. Stromatolites played a crucial role in the development of modern Earth by contributing to the production of oxygen through photosynthesis, significantly influencing the planet's atmosphere and paving the way for the evolution of more complex life forms. Their presence highlights the early biological processes that shaped the Earth's environment.

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3mo ago

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