( They ( ( ( ( point ( to ( ( a ( rapid increase ) ) ( in ( population ( and ( human needs ) ) ) ) ) ) ) ( through ( ( the ( year ( 2000 while ) ) ) ( at ( the ( same time ) ) ) ) ) ) ( ( a decline ) ( in ( ( the ( earth 's ) ) ( capacity ( to ( ( ( ( meet ( those needs ) ) , ) ( unless ( ( nations ( of ( the ( world act ) ) ) ) decisively ) ) ) ( to ( alter ( current trends ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP point) (PP (TO to) (NP (NP (DT a) (JJ rapid) (NN increase)) (PP (IN in) (NP (NN population) (CC and) (JJ human) (NNS needs))))) (PP (IN through) (NP (NP (DT the) (NN year) (CD 2000) (NN while)) (PP (IN at) (NP (DT the) (JJ same) (NN time))))) (NP (NP (DT a) (NN decline)) (PP (IN in) (NP (NP (DT the) (NN earth) (POS 's)) (NN capacity) (S (VP (TO to) (VP (VB meet) (NP (DT those) (NNS needs)) (, ,) (SBAR (IN unless) (S (NP (NP (NNS nations)) (PP (IN of) (NP (DT the) (NN world) (NN act)))) (ADVP (RB decisively)))) (S (VP (TO to) (VP (VB alter) (NP (JJ current) (NNS trends)))))))))))) (. .)))
They point to a rapid increase in population and human needs through the year 2000 while at the same time a decline in the earth's capacity to meet those needs, unless nations of the world act decisively to alter current trends.
(ROOT (S (NP (NNS Humans)) (VP (VBP are) (ADJP (JJ unique) (PP (IN in) (NP (PRP$ their) (NN ability) (S (VP (TO to) (VP (VB alter) (NP (PRP$ their) (NN environment)) (PP (IN with) (NP (NP (DT the) (JJ conscious) (NN purpose)) (PP (IN of) (NP (NP (JJ increasing) (VBG carrying) (NN capacity)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ acts) (PP (IN as) (NP (NP (DT a) (JJ limiting) (NN factor)) (PP (IN on) (NP (NP (NNS populations)) (PP (IN in) (NP (NN general))))))))))))))))))))) (. .)))