( ( That is ) ( , ( ( ( rather ( than ( ( a ( hot ( , ( molten ( ( surface and ) atmosphere ) ) ) ) ) ( full ( of ( carbon dioxide ) ) ) ) ) ) ( , ( ( ( the ( Earth 's ) ) surface ) ( would ( ( be ( very much ) ) ( like ( it ( is today ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (INTJ (DT That) (VBZ is)) (, ,) (S (PP (RB rather) (PP (IN than) (NP (NP (DT a) (JJ hot) (, ,) (JJ molten) (NN surface) (CC and) (NN atmosphere)) (PP (JJ full) (IN of) (NP (NN carbon) (NN dioxide)))))) (, ,) (NP (NP (DT the) (NN Earth) (POS 's)) (NN surface)) (VP (MD would) (VP (VB be) (ADJP (RB very) (JJ much)) (SBAR (IN like) (S (NP (PRP it)) (VP (VBZ is) (NP (NN today)))))))) (. .)))
That is, rather than a hot, molten surface and atmosphere full of carbon dioxide, the Earth's surface would be very much like it is today.
(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))))) (. .)))