( ( This ( excess urea ) ) ( ( makes ( the ( urine alkaline ) ) ) . ) )
(ROOT (S (NP (DT This) (JJ excess) (NN urea)) (VP (VBZ makes) (NP (DT the) (NN urine) (NN alkaline))) (. .)))
This excess urea makes the urine alkaline.
(ROOT (S (NP (NNP Urea)) (VP (VBZ is) (VP (VP (VBN made) (PP (IN in) (NP (DT the) (NN liver)))) (CC and) (VP (VBN excreted) (PP (IN in) (NP (NN urine)))))) (. .)))
Urea is made in the liver and excreted in urine.