( ( ( ( ( ( Another system ) ( in ( your body ) ) ) , ) ( the ( excretory system ) ) ) , ) ( also ( ( removes wastes ) . ) ) )
(ROOT (S (NP (NP (NP (DT Another) (NN system)) (PP (IN in) (NP (PRP$ your) (NN body)))) (, ,) (NP (DT the) (JJ excretory) (NN system)) (, ,)) (ADVP (RB also)) (VP (VBZ removes) (NP (NNS wastes))) (. .)))
Another system in your body, the  excretory system, also removes wastes.
(ROOT (S (NP (DT The) (JJ urinary) (NN system) (NN system)) (VP (VP (VBZ controls) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN water)))) (PP (IN in) (NP (DT the) (NN body)))) (CC and) (VP (VBZ removes) (NP (NNS wastes)))) (. .)))