scienceyoucanlove: Photograph by Steve Gschmeissner, Photo Researchers, Inc CYANOBACTERIATiny green cyanobacteria played an outsize role in Earth’s history by creating the planet’s oxygen-rich atmosphere through photosynthesis. Ancestral forms also

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scienceyoucanlove: Photograph by Steve Gschmeissner, Photo Researchers, Inc CYANOBACTERIATiny green cyanobacteria played an outsize role in Earth’s history by creating the planet’s oxygen-rich atmosphere through photosynthesis. Ancestral forms also

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