( Energy ( ( ( ( flows ( through ( ecosystems ( in ( one direction ) ) ) ) ) , ) ( from ( ( photosynthetic organisms ) ( to ( herbivores ( to ( carnivores ( to decomposers ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Energy)) (VP (VBZ flows) (PP (IN through) (NP (NP (NNS ecosystems)) (PP (IN in) (NP (CD one) (NN direction))))) (, ,) (PP (IN from) (NP (NP (JJ photosynthetic) (NNS organisms)) (PP (TO to) (NP (NP (NNS herbivores)) (PP (TO to) (NP (NP (NNS carnivores)) (PP (TO to) (NP (NNS decomposers)))))))))) (. .)))
Energy flows through ecosystems in one direction, from photosynthetic organisms to herbivores to carnivores to decomposers.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN carnivore)) (VP (VBZ is) (PP (IN at) (NP (NP (DT the) (NN top)) (PP (IN of) (NP (DT the) (NN energy) (NN pyramid)))))) (. .)))