Many small factors will destroy the ecological balance

But even minor changes in one factor can upset this balance,and the sudden introduction of non-native organisms can be a pretty major change.A species that is evolved in a separate habitat will be susceptible to different limiting factors,different predators,different energy sources,and different climates.If the new habitat's limiting factors fail to restrict the species growth,it will continue to multiply,out-competing native organisms for resources and disrupting the entire ecosystem.