​Many Introduced Species Have Deleterious Effects on Communities and Ecosystems

Multiple Choice

​Many introduced species have deleterious effects on communities and ecosystems because ____.

A) ​coevolved parasites and pathogens are absent
B) ​the introduced species are long-lived
C) ​predators prefer the introduced species, resulting in proliferation of native prey species
D) ​the community from which they came lost an important predator, competitor, or parasite
E) human beings do not know how to appreciate them​