( Today ( ( much ( atmospheric ( carbon dioxide ) ) ) ( ( is ( ( ( ( ( bound up ) ( in ( this form ) ) ) , ) or ) ( dissolved ( in ( ( hot rock ) ( inside ( the Earth ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NN Today)) (NP (JJ much) (JJ atmospheric) (NN carbon) (NN dioxide)) (VP (VBZ is) (VP (VP (VBN bound) (PRT (RP up)) (PP (IN in) (NP (DT this) (NN form)))) (, ,) (CC or) (VP (VBN dissolved) (PP (IN in) (NP (NP (JJ hot) (NN rock)) (PP (IN inside) (NP (DT the) (NN Earth)))))))) (. .)))
Today much atmospheric carbon dioxide is bound up in this form, or dissolved in hot rock inside the Earth.
(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))))) (. .)))