( ( ( ( Tertiary consumers ) or ) ( secondary carnivores ) ) ( ( are ( animals ( that ( ( receive ( their ( organic energy ) ) ) ( by ( consuming ( primary carnivores ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Tertiary) (NNS consumers)) (CC or) (NP (JJ secondary) (NNS carnivores))) (VP (VBP are) (NP (NP (NNS animals)) (SBAR (WHNP (WDT that)) (S (VP (VBP receive) (NP (PRP$ their) (JJ organic) (NN energy)) (PP (IN by) (S (VP (VBG consuming) (NP (JJ primary) (NNS carnivores)))))))))) (. .)))
Tertiary consumers or secondary carnivores are animals that receive their organic energy by consuming primary carnivores.
(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)))))) (. .)))