Introduced species can have deleterious effects on biological communities by _____. I) preying on native species II) competing with native species for food or light III) displacing native species IV) competing with native species for space or breeding/nesting habitat Introduced species can have deleterious effects on biological communities by _____. I) preying on native species II) competing with native species for food or light III) displacing native species IV) competing with native species for space or breeding/nesting habitat only II, III, and IV only I and III only II and IV I, II, III and IV