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ScienceDaily: Fossils & Ruins News |
| Nitrogen inputs in the ancient ocean Posted: 06 Aug 2021 07:43 AM PDT It was long assumed that cyanobacteria were mainly responsible for fixing nitrogen on early Earth, thus making nitrogen available to the biosphere. Researchers now show that purple sulfur bacteria could have contributed substantially to nitrogen fixation under the conditions prevailing in the Proterozoic ocean. |
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