( ( Cellular respiration ) ( ( ( ( uses oxygen ) and ) ( ( produces ( carbon dioxide ) ) ( as ( a ( waste product ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Cellular) (NNP respiration)) (VP (VP (VBZ uses) (NP (NN oxygen))) (CC and) (VP (VBZ produces) (NP (NN carbon) (NN dioxide)) (PP (IN as) (NP (DT a) (NN waste) (NN product))))) (. .)))
Cellular respiration uses oxygen and produces carbon dioxide as a waste product.
(ROOT (S (PP (IN In) (NP (DT the) (NN body))) (, ,) (S (NP (NN oxygen)) (VP (VBZ is) (VP (VBN used) (PP (IN by) (NP (NP (NNS cells)) (PP (IN of) (NP (NP (DT the) (NN body) (POS 's)) (NNS tissues)))))))) (CC and) (S (NP (NN carbon) (NN dioxide)) (VP (VBZ is) (VP (VBN produced) (PP (IN as) (NP (DT a) (NN waste) (NN product)))))) (. .)))