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During the Ordovician period, a few hundred million years ago, CO2 concentrations were around 4,000 - 6,000 ppm, and there was plenty of animal life. At the lo
by akvadrako 7y ago
During the Ordovician period, a few hundred million years ago, CO2 concentrations were around 4,000 - 6,000 ppm, and there was plenty of animal life.
At the low end, the article is talking about 10,000 ppm (0.01 bar), so not much higher.
- raxxorrax 7y agoYeah, I would think that is still okay for life. Even if CO2 does displace O2, I would imagine some adapted respiratory organs could very well deal with that if the concentration were higher.