In the future we can observe a further continuous decrease of biomass with the strongest decrease in complex multi-cellular life. The life spans of complex multicellular life and of eukaryotes end at about 0.8 Gyr and 1.3 Gyr from present, respectively. In both cases the extinction will be caused by reaching the upper limit of the temperature tolerance window. In contrast to the first appearance of complex multicellular life via the Cambrian explosion, its extinction proceeds more or less continuously. In the future there will be no bistability, that is, the extinction of complex multicellular life will not proceed as an implosion. Comparing these results with the life span for an Earth without biotic enhancement of weathering (~0.5 Gyr) the life spans are extended.
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