( ( Most ( of ( ( the energy ) ( that ( is ( used ( by ( ( living organisms ) ( on earth ) ) ) ) ) ) ) ) ) ( ultimately ( ( comes ( from ( ( the sun ) ( in ( ( the form ) ( of ( radiant energy ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NP (JJS Most)) (PP (IN of) (NP (NP (DT the) (NN energy)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN used) (PP (IN by) (NP (NP (VBG living) (NNS organisms)) (PP (IN on) (NP (NN earth)))))))))))) (ADVP (RB ultimately)) (VP (VBZ comes) (PP (IN from) (NP (NP (DT the) (NN sun)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (JJ radiant) (NN energy)))))))) (. .)))
Most of the energy that is used by living organisms on earth ultimately comes from the sun in the form of radiant energy .
(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.