( ( The ( grazing food ) ) ( ( ( ( chain models ) ( ( the movement ) ( of ( energy ( in ( ( producers and ) consumers ) ) ) ) ) ) ( at ( the ( trophic level ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN grazing) (NN food)) (VP (NP (NN chain) (NNS models)) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (NP (NN energy)) (PP (IN in) (NP (NNS producers) (CC and) (NNS consumers)))))) (PP (IN at) (NP (DT the) (JJ trophic) (NN level)))) (. .)))
The grazing food chain models the movement of energy in producers and consumers at the trophic level.
(ROOT (S (NP (NP (NN Loss)) (PP (IN of) (NP (NN energy)))) (VP (VBZ is) (NP (DT the) (NN reason)) (SBAR (IN that) (S (NP (NN food) (NN chain)) (ADVP (RB typically)) (VP (VBZ has) (NP (JJ few) (NNS levels)))))) (. .)))