( Heterotrophs ( also ( ( are ( called consumers ) ) . ) ) )
(ROOT (S (NP (NNS Heterotrophs)) (ADVP (RB also)) (VP (VBP are) (VP (VBN called) (NP (NNS consumers)))) (. .)))
Heterotrophs also are called consumers.
(ROOT (S (NP (NNS Heterotrophs)) (VP (VBZ is) (NP (NP (DT another) (NN name)) (PP (IN for) (NP (NNS consumers))))) (. .)))