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

All the options are correct.

Explanation:

Introduced species can have deleterious effects on biological communities by - All of the above options are correct.

An introduced species are those species that are not local to the place where they are introduced accidentally or by humans.

So, when such species grow in number, they can be a threat to the native animals there.

answer; /// i believe the correct answer is (when one group has an extremely high score at pretest;

stewards ice box was the purchase of alaska from russia and it was called that because people thought it was not a good idea to purchase alaska