11. In addition, the stressful environment suppress species competition and promotes mutualism . 12. Mutualism may simply confer a higher payoff than nectar robbing.13. So, why are there very few documented examples of mutualism coextinctions? 14. The models may also underestimate the robustness of the mutualisms . 15. Eventually, however, de Cleyre was moved to embrace mutualism over individualism. 16. The obvious benefits to both organisms of this mutualism . 17. Mutualism is a form of symbiosis that is beneficial to both involved organisms.18. Coevolution has led to the development of very specific mutualisms in such systems. 19. Some believe that cleaning represents selfless co-operation, essentially pure mutualism . 20. Indirect mutualisms occur where the organisms live apart.