Geochemists have finally unraveled a profound evolutionary puzzle regarding how early Earth maintained an oxygen-rich atmosphere suitable for breathing life forms. By analyzing ancient marine rock formations, researchers revealed that a self-sustaining phosphorus recycling loop within primordial oceans acted as a powerful buffer. This dynamic system continuously stimulated oxygen-producing microbes, keeping atmospheric levels high even during periods of extreme global climate volatility and explaining why planetary conditions remained stable for billions of years.
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