Invasive species disrupt a habitat’s food chain. Cane toads were used to get rid of beetles that ate sugar cane, but they killed native predators and ate plants and small mammals too. When invasive species start consuming native species, the food chain of the habitat is disrupted.
Invasive species can change the food chain for the better. The red fox was a helpful hand in thinning out wild rabbits in Australia. The rabbits were an invasive species that multiplied rapidly and became a problem. Therefore, the introduction of another invasive species worked well.
[P1] Invasive species disrupt food chains. [P2] Native species cannot survive if the food chain is changed.
Rejecting the premises
[Rejecting P1] Invasive species can refine the food chain. [Rejecting P2] Native species can adapt to changes.