Natural systems were complex and non-linear, and there was a very real risk that growing GHG concentrations could trigger various feedback mechanisms that would drive climatic changes and their consequences to levels that were extremely difficult to manage.
Les systèmes naturels étaient complexes et non linéaires, et il existait un risque bien réel que les concentrations croissantes de GES déclenchent diverses réactions qui rendraient les changements climatiques et leurs conséquences extrêmement difficiles à gérer.