( It ( ( ( turns ( salt water ) ) ( into fresh ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ turns) (NP (NN salt) (NN water)) (PP (IN into) (NP (JJ fresh)))) (. .)))
It turns salt water into fresh.
(ROOT (S (NP (JJ Fresh) (NN water) (NNS biomes)) (VP (VBP are) (VP (VBN defined) (PP (IN by) (NP (JJ low) (NN salt) (NN concentration))))) (. .)))