( ( In ( the oceans ) ) ( ( gravitational effects ) ( ( could ( ( ( be ( ( even ( more drastic ) ) ( than ( on ( the land ) ) ) ) ) , ) ( since ( ( water pressures ) ( ( ( increase ( far ( more rapidly ) ) ) ( with depth ) ) ( than ( air pressure ) ) ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN In) (NP (DT the) (NNS oceans))) (NP (JJ gravitational) (NNS effects)) (VP (MD could) (VP (VB be) (ADJP (ADJP (RB even) (RBR more) (JJ drastic)) (PP (IN than) (PP (IN on) (NP (DT the) (NN land))))) (, ,) (SBAR (IN since) (S (NP (NN water) (NNS pressures)) (VP (VBP increase) (ADVP (RB far) (RBR more) (RB rapidly)) (PP (IN with) (NP (NN depth))) (PP (IN than) (NP (NN air) (NN pressure)))))))) (. .)))
In the oceans gravitational effects could be even more drastic than on the land, since water pressures increase far more rapidly with depth than air pressure.
(ROOT (S (NP (NP (DT The) (NN pressure)) (PP (IN of) (NP (NN ocean) (NN water)))) (VP (VBZ increases) (ADVP (RB rapidly)) (SBAR (IN as) (S (NP (DT the) (NN water)) (VP (VBZ gets) (ADVP (RBR deeper)))))) (. .)))