( ( If ( ( an organism ) ( fails ( to ( maintain homeostasis ) ) ) ) ) ( , ( this ( ( may ( result ( in ( ( disease or ) death ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (DT an) (NN organism)) (VP (VBZ fails) (S (VP (TO to) (VP (VB maintain) (NP (NNS homeostasis)))))))) (, ,) (NP (DT this)) (VP (MD may) (VP (VB result) (PP (IN in) (NP (NN disease) (CC or) (NN death))))) (. .)))
If an organism fails to maintain                    homeostasis, this may result in disease or death.
(ROOT (S (SBAR (IN If) (S (NP (NP (DT an) (NN organism) (POS 's)) (NNS homeostasis)) (VP (VBZ is) (RB not) (VP (VBN maintained))))) (, ,) (NP (DT the) (NN effect)) (VP (MD will) (VP (VB be) (NP (NN death) (CC or) (NN disease)))) (. .)))