Many introduced species have deleterious effects on communities and ecosystems because
A) coevolved parasites and competitors are absent.
B) the introduced species are long-lived.
C) predators prefer the introduced species; therefore, the local prey proliferate to dangerously high levels.
D) the communities from which they came lost an important predator, competitor, or parasite.
E) all of these occur.

Question

Quizplus · Accepted Answer

Introduced species often thrive because they lack natural predators, parasites, and competitors in the new environment, allowing them to outcompete native species.

Many Introduced Species Have Deleterious Effects on Communities and Ecosystems