( ( The result ) ( ( was ( that ( ( ( only ( ten percent ) ) ( of ( the ( carbon dioxide ) ) ) ) ( was ( ( removed as ) ( compared ( to ( ( the ( expected amount ) ) ( for ( ( how much ) ( ( iron sulfate ) ( was added ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN result)) (VP (VBD was) (SBAR (IN that) (S (NP (NP (RB only) (CD ten) (NN percent)) (PP (IN of) (NP (DT the) (NN carbon) (NN dioxide)))) (VP (VBD was) (VP (VBN removed) (PP (IN as)) (PP (VBN compared) (PP (TO to) (NP (NP (DT the) (JJ expected) (NN amount)) (PP (IN for) (SBAR (WHADJP (WRB how) (JJ much)) (S (NP (NN iron) (NN sulfate)) (VP (VBD was) (VP (VBN added)))))))))))))) (. .)))
The result was that only ten percent of the carbon dioxide was removed as compared to the expected amount for how much iron sulfate was added.
(ROOT (S (PP (IN During) (NP (DT the) (JJ early) (NN paleozoic))) (, ,) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NP (NN carbon) (NN dioxide)) (PP (IN in) (NP (DT the) (NN atmosphere)))))) (VP (VBD was) (ADJP (RB much) (JJR greater)) (PP (VBN compared) (PP (TO to) (NP (NN today))))) (. .)))