( ( Most ( of ( ( the ( Sun 's ) ) energy ) ) ) ( ( reaches ( ( the Earth ) ( in ( this form ) ) ) ) . ) )
(ROOT (S (NP (NP (JJS Most)) (PP (IN of) (NP (NP (DT the) (NNP Sun) (POS 's)) (NN energy)))) (VP (VBZ reaches) (NP (NP (DT the) (NN Earth)) (PP (IN in) (NP (DT this) (NN form))))) (. .)))
Most of the Sun's energy reaches the Earth in this form.
(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)))) (. .)))