( Animals ( also ( ( ( eliminate ( waste nitrogen ) ) ( as ( urea ( in ( the ( urea cycle ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NNS Animals)) (ADVP (RB also)) (VP (VBP eliminate) (NP (NN waste) (NN nitrogen)) (PP (IN as) (NP (NP (NN urea)) (PP (IN in) (NP (DT the) (NN urea) (NN cycle)))))) (. .)))
Animals also eliminate waste nitrogen as urea in the urea cycle.
(ROOT (S (NP (NNS Animals)) (VP (MD can) (VP (VP (VB transport) (NP (NP (DT the) (NN waste) (NN material)) (VP (VBN known) (PP (IN as) (NP (NP (NN urea)) (PP (IN in) (NP (DT the) (JJ circulatory) (NN system)))))))) (CC and) (VP (VB store) (NP (PRP it)) (ADVP (RB safely)) (PP (IN at) (NP (JJ high) (NNS concentrations)))))) (. .)))