NOx can be transported long distances and contribute to ozone many hundreds of miles from its source.
( NOx ( ( can ( ( ( be ( transported ( long distances ) ) ) and ) ( ( contribute ( to ( ( ozone ( many hundreds ) ) ( of miles ) ) ) ) ( from ( its source ) ) ) ) ) . ) )
(ROOT (S (NP (NNP NOx)) (VP (MD can) (VP (VP (VB be) (VP (VBN transported) (NP (JJ long) (NNS distances)))) (CC and) (VP (VB contribute) (PP (TO to) (NP (NP (NN ozone) (JJ many) (NNS hundreds)) (PP (IN of) (NP (NNS miles))))) (PP (IN from) (NP (PRP$ its) (NN source)))))) (. .)))
NOx can not move far from its source, so it does not contribute to ozone.
( ( ( ( ( NOx ( ( can not ) ( move ( far ( from ( its source ) ) ) ) ) ) , ) so ) ( it ( ( does not ) ( contribute ( to ozone ) ) ) ) ) . )
(ROOT (S (S (NP (NNP NOx)) (VP (MD can) (RB not) (VP (VB move) (ADVP (RB far) (PP (IN from) (NP (PRP$ its) (NN source))))))) (, ,) (IN so) (S (NP (PRP it)) (VP (VBZ does) (RB not) (VP (VB contribute) (PP (TO to) (NP (NN ozone)))))) (. .)))