( ( Plant nutrition ) ( ( is ( ( the study ) ( of ( ( the ( chemical ( ( elements and ) compounds ) ) ) ( that ( are ( necessary ( ( ( ( ( for ( plant growth ) ) , ) and ) also ) ( of ( ( ( their ( external supply ) ) and ) ( internal metabolism ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Plant) (NNP nutrition)) (VP (VBZ is) (NP (NP (DT the) (NN study)) (PP (IN of) (NP (NP (DT the) (JJ chemical) (NNS elements) (CC and) (NNS compounds)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADJP (JJ necessary) (PP (PP (IN for) (NP (NN plant) (NN growth))) (, ,) (CC and) (ADVP (RB also)) (PP (IN of) (NP (NP (PRP$ their) (JJ external) (NN supply)) (CC and) (NP (JJ internal) (NN metabolism))))))))))))) (. .)))
Plant nutrition is the study of the chemical elements and compounds that are necessary for plant growth, and also of their external supply and internal metabolism.
(ROOT (S (NP (NNP Plant) (NNP nutrition)) (VP (VBZ is) (NP (NP (DT the) (NN study)) (PP (IN of) (NP (NP (DT the) (JJ chemical) (NNS elements)) (ADJP (JJ necessary) (PP (IN for) (NP (NN plant) (NN growth)))))))) (. .)))