( Legumes ( ( can ( use ( ( ( available ( soil nitrogen ) ) ( as ( well as ) ) ) ( ( the nitrogen ) ( ( fixed ( from ( the air ) ) ) ( by ( ( the ( rhizobium bacteria ) ) ( living ( in ( nodules ( of ( the ( root system ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Legumes)) (VP (MD can) (VP (VB use) (NP (NP (JJ available) (NN soil) (NN nitrogen)) (CONJP (RB as) (RB well) (IN as)) (NP (NP (DT the) (NN nitrogen)) (VP (VBN fixed) (PP (IN from) (NP (DT the) (NN air))) (PP (IN by) (NP (NP (DT the) (NN rhizobium) (NNS bacteria)) (VP (VBG living) (PP (IN in) (NP (NP (NNS nodules)) (PP (IN of) (NP (DT the) (NN root) (NN system))))))))))))) (. .)))
Legumes can use available soil nitrogen as well as the nitrogen fixed from the air by the rhizobium bacteria living in nodules of the root system.
(ROOT (S (NP (DT The) (NN nitrogen) (NN cycle)) (VP (VBZ includes) (NP (NP (NN air)) (, ,) (NP (NN soil)) (, ,) (CC and) (NP (VBG living) (NNS things)))) (. .)))