( ( The sun ) ( ( ( furnishes ( ( directly or ) indirectly ) ) ( all ( of ( ( the energy ) ( ( ( ( supporting life ) ( on earth ) ) , ) ( because ( ( all ( ( foods and ) fuels ) ) ( are ( ( derived ultimately ) ( from ( plants ( using ( ( the energy ) ( of sunlight ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN sun)) (VP (VBZ furnishes) (ADVP (RB directly) (CC or) (RB indirectly)) (NP (NP (DT all)) (PP (IN of) (NP (NP (DT the) (NN energy)) (VP (VBG supporting) (NP (NN life)) (PP (IN on) (NP (NN earth))) (, ,) (SBAR (IN because) (S (NP (DT all) (NNS foods) (CC and) (NNS fuels)) (VP (VBP are) (VP (VBN derived) (ADVP (RB ultimately)) (PP (IN from) (NP (NP (NNS plants)) (VP (VBG using) (NP (NP (DT the) (NN energy)) (PP (IN of) (NP (NN sunlight)))))))))))))))) (. .)))
The sun furnishes directly or indirectly all of the energy supporting life on earth, because all foods and fuels are derived ultimately from plants using the energy of sunlight.
(ROOT (S (NP (NP (JJS Most)) (PP (IN of) (NP (NP (DT the) (NN energy)) (VP (VBN used) (PP (IN by) (NP (VBG living) (NNS things))))))) (VP (VBZ comes) (ADVP (CC either) (RB directly) (CC or) (RB indirectly)) (PP (IN from) (NP (DT the) (NN sun)))) (. .)))
Most of the energy used by living things comes either directly or indirectly from the sun.