( ( Mixed ( fresh ( and ( salt waters ) ) ) ) . )
(ROOT (S (VP (VB Mixed) (NP (JJ fresh) (CC and) (NN salt) (NNS waters))) (. .)))
Mixed fresh and salt waters.
(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))))) (. .)))