( ( A heterotroph ) ( ( is ( ( an organism ) ( that ( ( can not ) ( produce ( its ( own food ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN heterotroph)) (VP (VBZ is) (NP (NP (DT an) (NN organism)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (RB not) (VP (VB produce) (NP (PRP$ its) (JJ own) (NN food)))))))) (. .)))
A heterotroph is an organism that can not produce its own food.
(ROOT (S (NP (NNS Animals)) (VP (MD can) (RB not) (VP (VB produce) (NP (PRP$ their) (JJ own) (NN food)) (S (VP (VBG making) (S (NP (PRP them)) (ADJP (JJ heterotrophs)))))))))