( ( Non-native species ) ( ( ( are also ) ( called ( ( exotic ( , ( ( invasive and ) alien ) ) ) species ) ) ) . ) )
(ROOT (S (NP (JJ Non-native) (NNS species)) (VP (VBP are) (ADVP (RB also)) (VP (VBN called) (NP (ADJP (JJ exotic) (, ,) (JJ invasive) (CC and) (JJ alien)) (NNS species)))) (. .)))
Non-native species are also called exotic, invasive and alien species.
(ROOT (S (NP (JJ Exotic) (NNS species)) (VP (VBP are) (ADVP (RB also)) (VP (VBN called) (NP (JJ invasive) (NNS species)) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP threaten) (NP (JJ other) (NNS species))))))) (. .)))