( ( At ( this level ) ) ( ( the plants ) ( ( ( ( absorb sunlight ) and ) ( ( convert it ) ( to ( ( ( chemical energy ) ( -LRB- ( glucose -RRB- ) ) ) ( via photosynthesis ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN At) (NP (DT this) (NN level))) (NP (DT the) (NNS plants)) (VP (VP (VBP absorb) (NP (NN sunlight))) (CC and) (VP (VBP convert) (NP (PRP it)) (PP (TO to) (NP (NP (NP (NN chemical) (NN energy)) (PRN (-LRB- -LRB-) (NP (NN glucose)) (-RRB- -RRB-))) (PP (IN via) (NP (NN photosynthesis))))))) (. .)))
At this level the plants absorb sunlight and convert it to chemical energy (glucose) via photosynthesis.
(ROOT (S (PP (IN During) (NP (NN photosynthesis))) (, ,) (NP (NP (NN energy)) (PP (IN from) (NP (DT the) (NN sun)))) (VP (VBZ is) (VP (VBN converted) (PP (TO to) (NP (NN glucose))) (PP (IN after) (S (VP (VBG entering) (NP (DT a) (NN plant))))))) (. .)))