( Heterotrophs ( ( ( can not ) ( ( ( make ( their ( own food ) ) ) and ) ( require ( ( the presence ) ( of autotrophs ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Heterotrophs)) (VP (MD can) (RB not) (VP (VP (VB make) (NP (PRP$ their) (JJ own) (NN food))) (CC and) (VP (VB require) (NP (NP (DT the) (NN presence)) (PP (IN of) (NP (NNS autotrophs))))))) (. .)))
Heterotrophs cannot make their own food and require the presence of autotrophs.
(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)))))))))