( ( The carnivore ) ( then ( ( ( has ( to ( eat ( many herbivores ) ) ) ) ( to ( ( get ( enough energy ) ) ( to grow ) ) ) ) . ) ) )
(ROOT (S (NP (DT The) (NN carnivore)) (ADVP (RB then)) (VP (VBZ has) (S (VP (TO to) (VP (VB eat) (NP (JJ many) (NNS herbivores))))) (S (VP (TO to) (VP (VB get) (NP (JJ enough) (NN energy)) (S (VP (TO to) (VP (VB grow)))))))) (. .)))
The carnivore then has to eat many herbivores to get enough energy to grow.
(ROOT (S (NP (NNS Herbivores)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (NNS animals)) (SBAR (WHNP (WDT that)) (S (VP (VBP eat) (S (NP (NNS producers)) (VP (TO to) (VP (VB get) (NP (NN energy)))))))))))) (. .)))