( ( ( ( ( ( The ( Earth 's ) ) abundance ) ( of ( salt water ) ) ) and ) ( its ( ( generally high ) ( water content ) ) ) ) ( ( make ( it ( a ( good conductor ) ) ) ) . ) )
(ROOT (S (NP (NP (NP (NP (DT The) (NN Earth) (POS 's)) (NN abundance)) (PP (IN of) (NP (NN salt) (NN water)))) (CC and) (NP (PRP$ its) (ADJP (RB generally) (JJ high)) (NN water) (NN content))) (VP (VBP make) (S (NP (PRP it)) (NP (DT a) (JJ good) (NN conductor)))) (. .)))
The Earth's abundance of salt water and its generally high water content make it a good conductor.
(ROOT (S (NP (NP (DT The) (NN abundance)) (PP (IN of) (NP (NN water)))) (VP (VBZ makes) (NP (NP (DT the) (NN earth) (NN habitable)) (PP (IN for) (NP (NNS humans))))) (. .)))