( Heterotrophs ( ( are ( organisms ( that ( must ( ( feed ( on ( others ( for ( ( nourishment and ) energy ) ) ) ) ) ( -LRB- ( ( respiration ( exceeds production ) ) -RRB- ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Heterotrophs)) (VP (VBP are) (NP (NP (NNS organisms)) (SBAR (WHNP (WDT that)) (S (VP (MD must) (VP (VB feed) (PP (IN on) (NP (NP (NNS others)) (PP (IN for) (NP (NN nourishment) (CC and) (NN energy))))) (PRN (-LRB- -LRB-) (S (NP (NN respiration)) (VP (VBZ exceeds) (NP (NN production)))) (-RRB- -RRB-)))))))) (. .)))
Heterotrophs are organisms that must feed on others for nourishment and energy (respiration exceeds production).
(ROOT (S (NP (NP (NNS Organisms)) (ADJP (JJ incapable) (PP (IN of) (NP (NP (NN photosynthesis)) (SBAR (WHNP (WDT that)) (S (VP (MD must) (ADVP (RB therefore)) (VP (VB obtain) (NP (NN energy) (CC and) (NN carbon)) (PP (IN from) (NP (NN food))) (PP (IN by) (S (VP (VBG consuming) (NP (JJ other) (NNS organisms))))))))))))) (VP (VBP are) (VP (VBN called) (NP (NNS heterotrophs)))) (. .)))