( ( ( ( ( ( ( The amount ) ( of ( carbon ( in ( the atmosphere ) ) ) ) ) ( is ( roughly ( comparable ( to ( ( the amount ) ( contained ( in ( the biosphere ) ) ) ) ) ) ) ) ) , ) and ) ( ( ( the amount ) ( within soils ) ) ( is ( ( 1.5 ( times ( as much ) ) ) ( as either ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN amount)) (PP (IN of) (NP (NP (NN carbon)) (PP (IN in) (NP (DT the) (NN atmosphere)))))) (VP (VBZ is) (ADJP (RB roughly) (JJ comparable) (PP (TO to) (NP (NP (DT the) (NN amount)) (VP (VBN contained) (PP (IN in) (NP (DT the) (NN biosphere))))))))) (, ,) (CC and) (S (NP (NP (DT the) (NN amount)) (PP (IN within) (NP (NNS soils)))) (VP (VBZ is) (NP (NP (QP (CD 1.5) (NNS times) (IN as) (JJ much))) (PP (IN as) (NP (DT either)))))) (. .)))
The amount of carbon in the atmosphere  is roughly comparable to the amount contained in the biosphere, and the amount within soils is 1.5 times as much as either.
(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))))) (. .)))