( ( In ( comparison ( with ( the ( ( lithosphere or ) atmosphere ) ) ) ) ) ( it ( ( is ( a ( ( relatively thin ) layer ) ) ) . ) ) )
(ROOT (S (PP (IN In) (NP (NP (NN comparison)) (PP (IN with) (NP (DT the) (NN lithosphere) (CC or) (NN atmosphere))))) (NP (PRP it)) (VP (VBZ is) (NP (DT a) (ADJP (RB relatively) (JJ thin)) (NN layer))) (. .)))
In comparison with the lithosphere or atmosphere it is a relatively thin layer.
(ROOT (S (NP (NP (DT The) (JJ thin) (NN layer)) (PP (IN of) (NP (NP (NN rock)) (PP (IN on) (NP (NP (NN earth) (POS 's)) (NN surface)))))) (VP (VBZ is) (NP (DT the) (NN lithosphere))) (. .)))
The thin layer of rock on earth's surface is the lithosphere.