( ( Climate change ) ( ( ( refers ( to ( ( the buildup ) ( of ( man-made gases ) ) ) ) ) ( in ( ( the atmosphere ) ( that ( trap ( ( ( ( the ( sun 's ) ) heat ) , ) ( ( causing changes ) ( in ( ( weather patterns ) ( on ( a ( global scale ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Climate) (NN change)) (VP (VBZ refers) (PP (TO to) (NP (NP (DT the) (NN buildup)) (PP (IN of) (NP (JJ man-made) (NNS gases))))) (PP (IN in) (NP (NP (DT the) (NN atmosphere)) (SBAR (WHNP (WDT that)) (S (VP (NN trap) (NP (NP (NP (DT the) (NN sun) (POS 's)) (NN heat)) (, ,) (VP (VBG causing) (NP (NNS changes)) (PP (IN in) (NP (NP (NN weather) (NNS patterns)) (PP (IN on) (NP (DT a) (JJ global) (NN scale))))))))))))) (. .)))
Climate change refers to the buildup of man-made gases in the atmosphere that trap the sun's heat, causing changes in weather patterns on a global scale.
(ROOT (S (NP (NP (NN Uneven) (NN heating)) (PP (IN of) (NP (DT the) (NN atmosphere)))) (VP (VBP form) (NP (NN weather) (NNS patterns))) (. .)))