( ( ( ( ( Consumers , ) or ) heterotrophs ) , ) ( ( are ( ( those organisms ) ( that ( ( ( ( ( can not ) ( make ( their ( own food ) ) ) ) , ) and ) ( therefore ( must ( eat ( ( ( producers or ) ( other consumers ) ) ( to ( gain energy ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Consumers)) (, ,) (CC or) (NP (NNS heterotrophs)) (, ,)) (VP (VBP are) (NP (NP (DT those) (NNS organisms)) (SBAR (WHNP (WDT that)) (S (VP (VP (MD can) (RB not) (VP (VB make) (NP (PRP$ their) (JJ own) (NN food)))) (, ,) (CC and) (VP (ADVP (RB therefore)) (MD must) (VP (VB eat) (S (NP (NP (NNS producers)) (CC or) (NP (JJ other) (NNS consumers))) (VP (TO to) (VP (VB gain) (NP (NN energy)))))))))))) (. .)))
Consumers, or heterotrophs, are those organisms that cannot make their own food, and therefore must eat producers or other consumers to gain energy.
(ROOT (S (NP (NNS Animals)) (VP (MD can) (RB not) (VP (VB produce) (NP (PRP$ their) (JJ own) (NN food)) (S (VP (VBG making) (S (NP (PRP them)) (ADJP (JJ heterotrophs)))))))))