( ( ( The burning ) ( of ( ( fossil fuels ) ( by ( ( industry and ) cars ) ) ) ) ) ( ( produces ( ( ( ( the ( greenhouse ( gas ( carbon dioxide ) ) ) ) ( -LRB- ( CO2 -RRB- ) ) ) , ) ( which ( is ( blamed ( for ( ( ( ( ( trapping ( heat ( in ( the atmosphere ) ) ) ) , ) ( leading ( to ( global warming ) ) ) ) and ) ( threatening ( disastrous ( weather changes ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN burning)) (PP (IN of) (NP (NP (JJ fossil) (NNS fuels)) (PP (IN by) (NP (NN industry) (CC and) (NNS cars)))))) (VP (VBZ produces) (NP (NP (NP (DT the) (NN greenhouse) (NN gas) (NN carbon) (NN dioxide)) (PRN (-LRB- -LRB-) (NP (NNP CO2)) (-RRB- -RRB-))) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (VP (VBN blamed) (PP (IN for) (S (VP (VP (VBG trapping) (NP (NP (NN heat)) (PP (IN in) (NP (DT the) (NN atmosphere))))) (, ,) (VP (VBG leading) (PP (TO to) (NP (JJ global) (NN warming)))) (CC and) (VP (VBG threatening) (NP (JJ disastrous) (NN weather) (NNS changes)))))))))))) (. .)))
The burning of fossil fuels by industry and cars produces the greenhouse gas carbon dioxide (CO2), which is blamed for trapping heat in the atmosphere, leading to global warming and threatening disastrous weather changes.
(ROOT (S (NP (JJ Co2) (NN gas)) (VP (VBZ is) (VP (VBN released) (PP (IN into) (NP (NP (DT the) (NN atmosphere)) (SBAR (WHADVP (WRB when)) (S (NP (JJ fossil) (NNS fuels)) (VP (VBP are) (VP (VBN burned))))))))) (. .)))