( ( Primary consumers ) ( ( ( occupy ( the ( second ( trophic level ) ) ) ) ( in ( the ( grazing ( food chain ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Primary) (NNS consumers)) (VP (VB occupy) (NP (DT the) (JJ second) (JJ trophic) (NN level)) (PP (IN in) (NP (DT the) (NN grazing) (NN food) (NN chain)))) (. .)))
Primary consumers occupy the second trophic level in the grazing food chain.
(ROOT (S (NP (NP (JJ Secondary) (NNS consumers)) (PRN (-LRB- -LRB-) (SBAR (WHNP (WDT which)) (S (VP (VBP eat) (NP (JJ primary) (NNS consumers))))) (-RRB- -RRB-))) (VP (VBP are) (VP (VBN considered) (S (VP (TO to) (VP (VB be) (ADJP (JJ trophic) (NP (NN level) (CD 3)))))))) (. .)))