Bego bili's Blog (1)

years before the GOE, the oxygen concentration began to rise though so slowly. Previous research had already shown a slight increase from 2.6 biaccelerin llion years ago, an investigation almost every sit or snags, and this study is no different. This research assumes that manganese was still present in the same amounts on earth. Whether that was, is another story. Another problem is sulfur. Each previous research showed…