( ( ( The rocks ) ( composing ( ( the ( earth 's ) ) crust ) ) ) ( ( ( are also ) ( embedded ( in ( its depths ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NNS rocks)) (VP (VBG composing) (NP (NP (DT the) (NN earth) (POS 's)) (NN crust)))) (VP (VBP are) (ADVP (RB also)) (VP (VBN embedded) (PP (IN in) (NP (PRP$ its) (NNS depths))))) (. .)))
The rocks composing the earth's crust are also embedded in its depths.
(ROOT (S (NP (NP (DT The) (NN earth) (POS 's)) (NN crust)) (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (JJ igneuos) (NN rock))))) (. .)))