( ( Food chains ) ( ( show ( how ( energy ( is ( ( ( ( passed ( from ( the sun ) ) ) ( to producers ) ) , ) ( from ( producers ( ( ( ( to consumers ) , ) and ) ( from ( consumers ( to decomposers ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Food) (NNS chains)) (VP (VBP show) (SBAR (WHADVP (WRB how)) (S (NP (NN energy)) (VP (VBZ is) (VP (VBN passed) (PP (IN from) (NP (DT the) (NN sun))) (PP (TO to) (NP (NNS producers))) (, ,) (PP (IN from) (NP (NP (NNS producers)) (PP (PP (TO to) (NP (NNS consumers))) (, ,) (CC and) (PP (IN from) (NP (NP (NNS consumers)) (PP (TO to) (NP (NNS decomposers))))))))))))) (. .)))
Food chains show how energy is passed from the sun to producers, from producers to consumers, and from consumers to decomposers.
(ROOT (S (NP (NNP Food) (NNS chains)) (VP (VBP carry) (NP (NN energy)) (PP (IN from) (NP (NP (NNS producers)) (PP (TO to) (NP (NNS consumers)))))) (. .)))