claim: Species that have a lot of plasticity tend to be generalists.
evidence: Common invasive species traits include the following : Fast growth Rapid reproduction High dispersal ability Phenotype plasticity ( the ability to alter growth form to suit current conditions ) Tolerance of a wide range of environmental conditions ( Ecological competence ) Ability to live off of a wide range of food types ( generalist ) Association with humans Prior successful invasions Typically, an introduced species must survive at low population densities before it becomes invasive in a new location.