( ( Cellular wastes ) ( ( are ( ( moved ( by ( the blood ) ) ) ( to ( ( the kidneys ) ( where ( they ( are ( ( removed ( from ( the blood ) ) ) ( to ( form urine ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Cellular) (NNS wastes)) (VP (VBP are) (VP (VBN moved) (PP (IN by) (NP (DT the) (NN blood))) (PP (TO to) (NP (NP (DT the) (NNS kidneys)) (SBAR (WHADVP (WRB where)) (S (NP (PRP they)) (VP (VBP are) (VP (VBN removed) (PP (IN from) (NP (DT the) (NN blood))) (S (VP (TO to) (VP (VB form) (NP (NN urine))))))))))))) (. .)))
Cellular wastes are moved by the  blood to the kidneys where they  are removed from the blood to  form urine.
(ROOT (S (NP (NNP Urine)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (JJ liquid) (NN waste)) (VP (VBN formed) (PP (IN by) (NP (NNS kidneys)))))))) (. .)))