( ( Human activities ) ( ( ( are greatly ) ( increasing ( ( the supply ) ( of ( nitrogen ( available ( for ( cycling ( between ( ( ( the ( living world ) ) and ) ( the ( soil ( , ( water ( , ( and atmosphere ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Human) (NNS activities)) (VP (VBP are) (ADVP (RB greatly)) (VP (VBG increasing) (NP (NP (DT the) (NN supply)) (PP (IN of) (NP (NP (NN nitrogen)) (ADJP (JJ available) (PP (IN for) (S (VP (VBG cycling) (PP (IN between) (NP (NP (DT the) (VBG living) (NN world)) (CC and) (NP (DT the) (NN soil) (, ,) (NN water) (, ,) (CC and) (NN atmosphere))))))))))))) (. .)))
Human activities are greatly increasing the supply of nitrogen available for cycling between the living world and the soil, water, and atmosphere.
(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)))) (. .)))