If having no natural predators increases potential to produce more offspring than the environment can support, then having what increases the potential to produce more offspring than the environment can support?

Answer choices:
- no natural habitat
 - no natural prey
 - competing for resources
 - peachleaf willow
 - no natural owners
 - members of their own species
 - animals with backbones
 - no natural predators

 

        no natural predators  