( ( Because ( ( ( the top ) ( of ( the ( continental crust ) ) ) ) ( is ( above ( that ( of ( the oceanic ) ) ) ) ) ) ) ( , ( water ( ( ( ( ( runs off ) ( the continents ) ) and ) ( collects ( above ( the ( oceanic crust ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Because) (S (NP (NP (DT the) (NN top)) (PP (IN of) (NP (DT the) (JJ continental) (NN crust)))) (VP (VBZ is) (PP (IN above) (NP (NP (DT that)) (PP (IN of) (NP (DT the) (NN oceanic)))))))) (, ,) (NP (NN water)) (VP (VP (VBZ runs) (PRT (RP off)) (NP (DT the) (NN continents))) (CC and) (VP (VBZ collects) (PP (IN above) (NP (DT the) (JJ oceanic) (NN crust))))) (. .)))
Because the top of the continental crust is above that of the oceanic, water runs off the continents and collects above the oceanic crust.
(ROOT (S (NP (NP (DT The) (NN creation) (CC and) (NN destruction)) (PP (IN of) (NP (JJ oceanic) (NN crust)))) (VP (VBZ is) (NP (DT the) (NN reason) (NN continents) (NN move))) (. .)))