( Others ( ( are ( pests ( that ( have ( ( ( claimed ( ( the habitats ) ( of ( native species ) ) ) ) , ) ( ( ( ( forcing ( many ( of them ) ) ) ( to extinction ) ) , ) ( causing ( ( ( crop damage ) and ) ( ( ( human and ) animal ) disease ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Others)) (VP (VBP are) (NP (NP (NNS pests)) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (VP (VBN claimed) (NP (NP (DT the) (NNS habitats)) (PP (IN of) (NP (JJ native) (NNS species)))) (, ,) (S (VP (VBG forcing) (NP (NP (JJ many)) (PP (IN of) (NP (PRP them)))) (PP (TO to) (NP (NN extinction))) (, ,) (S (VP (VBG causing) (NP (NP (NN crop) (NN damage)) (CC and) (NP (UCP (NN human) (CC and) (NN animal)) (NN disease))))))))))))) (. .)))
Others are pests that have claimed the habitats of native species, forcing many of them to extinction, causing crop damage and human and animal disease.
(ROOT (S (NP (NNP Human) (NNP overpopulation)) (VP (VBZ is) (VP (VP (VBG crowding) (PRT (RP out)) (NP (JJ other) (NNS species))) (CC and) (VP (VBG making) (S (NP (NP (PDT all) (DT the) (JJ other) (NNS causes)) (PP (IN of) (NP (NN extinction)))) (ADJP (RBR worse)))))) (. .)))