( Extinction ( - ( ( ( Many ( ( species and ) populations ) ) ( live ( in ( the ( tropical rainforest ) ) ) ) ) . ) ) )
(ROOT (FRAG (NP (NNP Extinction)) (: -) (S (NP (JJ Many) (NNS species) (CC and) (NNS populations)) (VP (VBP live) (PP (IN in) (NP (DT the) (JJ tropical) (NN rainforest))))) (. .)))
Extinction- Many species and populations live in the tropical rainforest.
(ROOT (S (NP (NP (DT All) (NNS members)) (PP (IN of) (NP (DT a) (NN species) (NN living)))) (ADVP (RB together)) (VP (VB form) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN population))) (. .)))