( Scientists ( ( have ( ( forecast ( global temperatures ) ) ( ( ( ( ( ( ( ( ( warming ( by ( ( ( ( up to ) four ) degrees ) ( centigrade ( over ( the ( next century ) ) ) ) ) ) ) , ) ( melting ( polar ( ice caps ) ) ) ) , ) ( raising ( sea levels ) ) ) , ) ( flooding ( low ( lying islands ) ) ) ) and ) ( threatening ( thousands ( of ( species ( with extinction ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Scientists)) (VP (VBP have) (VP (VBN forecast) (NP (JJ global) (NNS temperatures)) (S (VP (VP (VBG warming) (PP (IN by) (NP (NP (QP (IN up) (TO to) (CD four)) (NNS degrees)) (ADJP (JJ centigrade) (PP (IN over) (NP (DT the) (JJ next) (NN century))))))) (, ,) (VP (VBG melting) (NP (JJ polar) (NN ice) (NNS caps))) (, ,) (VP (VBG raising) (NP (NN sea) (NNS levels))) (, ,) (VP (VBG flooding) (NP (JJ low) (VBG lying) (NNS islands))) (CC and) (VP (VBG threatening) (NP (NP (NNS thousands)) (PP (IN of) (NP (NP (NNS species)) (PP (IN with) (NP (NN extinction))))))))))) (. .)))
Scientists have forecast global temperatures warming by up to four degrees centigrade over the next century, melting polar ice caps, raising sea levels, flooding low lying islands and threatening thousands of species with extinction.
(ROOT (S (NP (JJ Global) (NN warming)) (VP (MD will) (VP (VP (VB eliminate) (NP (DT some) (NNS islands))) (CC and) (VP (VB reduce) (NP (NP (DT the) (NN area)) (PP (IN of) (NP (NNS others)))) (SBAR (IN because) (S (NP (PRP it)) (VP (MD will) (VP (VB raise) (NP (NN sea) (NNS levels))))))))) (. .)))
Global warming will eliminate some islands and reduce the area of others because it will raise sea levels.