( ( The ( greenhouse effect ) ) ( ( is ( ( ( ( the ( direct result ) ) ( of ( ( the ( large amounts ) ) ( of ( carbon dioxide ) ) ) ) ) ( -LRB- ( CO2 -RRB- ) ) ) ( which ( ( are constantly ) ( being ( ( released ( into ( our atmosphere ) ) ) ( through ( ( the burning ) ( of ( fossil fuels ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN greenhouse) (NN effect)) (VP (VBZ is) (NP (NP (NP (DT the) (JJ direct) (NN result)) (PP (IN of) (NP (NP (DT the) (JJ large) (NNS amounts)) (PP (IN of) (NP (NN carbon) (NN dioxide)))))) (PRN (-LRB- -LRB-) (NP (NNP CO2)) (-RRB- -RRB-)) (SBAR (WHNP (WDT which)) (S (VP (VBP are) (ADVP (RB constantly)) (VP (VBG being) (VP (VBN released) (PP (IN into) (NP (PRP$ our) (NN atmosphere))) (PP (IN through) (NP (NP (DT the) (NN burning)) (PP (IN of) (NP (JJ fossil) (NNS fuels)))))))))))) (. .)))
The greenhouse effect is the direct result of the large amounts of carbon dioxide ( CO2) which are constantly being released into our atmosphere through the burning of fossil fuels.
(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))))))))) (. .)))