( ( ( ( ( Producers ( are autotrophs ) ) , ) and ) ( they ( ( ( ( ( ( ( ( ( capture and ) transform ) energy ) ( by photosynthesis ) ) and ) ( absorb ( dissolved ( carbon dioxide ) ) ) ) , ) and ) ( ( ( ( ( ( use energy ) ( from ( the sun ) ) ) , ) ( to ( ( convert ( the carbon ) ) ( into ( organic molecules ) ) ) ) ) , ) ( thus ( supplying ( ( ( food ( for themselves ) ) and ) ( ( all ( other organisms ) ) ( that ( live ( in ( the stream ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Producers)) (VP (VBP are) (ADJP (JJ autotrophs)))) (, ,) (CC and) (S (NP (PRP they)) (VP (VP (VB capture) (CC and) (VB transform) (NP (NN energy)) (PP (IN by) (NP (NN photosynthesis)))) (CC and) (VP (VB absorb) (NP (JJ dissolved) (NN carbon) (NN dioxide))) (, ,) (CC and) (VP (VB use) (NP (NN energy)) (PP (IN from) (NP (DT the) (NN sun))) (, ,) (S (VP (TO to) (VP (VB convert) (NP (DT the) (NN carbon)) (PP (IN into) (NP (JJ organic) (NNS molecules)))))) (, ,) (S (ADVP (RB thus)) (VP (VBG supplying) (NP (NP (NP (NN food)) (PP (IN for) (NP (PRP themselves)))) (CC and) (NP (NP (DT all) (JJ other) (NNS organisms)) (SBAR (WHNP (WDT that)) (S (VP (VBP live) (PP (IN in) (NP (DT the) (NN stream))))))))))))) (. .)))
Producers are autotrophs, and they capture and transform energy by photosynthesis and absorb dissolved carbon dioxide, and use energy from the sun, to convert the carbon into organic molecules, thus supplying food for themselves and all other organisms that live in the stream.
(ROOT (S (S (NP (PRP You)) (VP (VBP call) (NP (NP (NNS organisms)) (SBAR (WHNP (WDT that)) (S (VP (VBP store) (NP (NP (NN chemical) (NN energy)) (PP (IN in) (NP (JJ carbohydrate) (NN food) (NNS molecules)))))))))) (NP (PRP they)) (VP (VBP produce) (SBAR (S (NP (PRP themselves)) (VP (VBZ autotrophs))))) (. .)))
You call organisms that store chemical energy in carbohydrate food molecules they produce themselves autotrophs.