( He ( ( notes ( ( ( ( that ( ( human extinction ) ( is unavoidable ) ) ) , ) and ) ( that ( it ( ( is better ) ( to ( ( ( become extinct ) soon ) ( to ( avoid ( causing ( ( the extinction ) ( of ( other animals ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBZ notes) (SBAR (SBAR (IN that) (S (NP (JJ human) (NN extinction)) (VP (VBZ is) (ADJP (JJ unavoidable))))) (, ,) (CC and) (SBAR (IN that) (S (NP (PRP it)) (VP (VBZ is) (ADJP (JJR better)) (S (VP (TO to) (VP (VB become) (ADJP (JJ extinct)) (ADVP (RB soon)) (S (VP (TO to) (VP (VB avoid) (S (VP (VBG causing) (NP (NP (DT the) (NN extinction)) (PP (IN of) (NP (JJ other) (NNS animals))))))))))))))))) (. .)))
He notes that human extinction is unavoidable, and that it is better to become extinct soon to avoid causing the extinction of other animals.
(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)))))) (. .)))