( ( The sun ) ( ( ( is also ) ( ( the ( ultimate source ) ) ( of ( all ( of ( ( the ( life-giving energy ) ) ( on earth ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN sun)) (VP (VBZ is) (ADVP (RB also)) (NP (NP (DT the) (JJ ultimate) (NN source)) (PP (IN of) (NP (NP (DT all)) (PP (IN of) (NP (NP (DT the) (JJ life-giving) (NN energy)) (PP (IN on) (NP (NN earth))))))))) (. .)))
The sun is also the ultimate source of all of the life-giving energy on earth.
(ROOT (S (ADVP (RB Ultimately)) (, ,) (NP (JJS most) (NN life) (NNS forms)) (VP (VBP get) (NP (PRP$ their) (NN energy)) (PP (IN from) (NP (DT the) (NN sun)))) (. .)))