( ( Age discrepancies ) ( ( may ( be ( explained ( in ( terms ( of ( both ( generational ( and ( life ( cycle factors ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Age) (NNS discrepancies)) (VP (MD may) (VP (VB be) (VP (VBN explained) (PP (IN in) (NP (NP (NNS terms)) (PP (IN of) (NP (DT both) (NN generational) (CC and) (NN life) (NN cycle) (NNS factors)))))))) (. .)))
Age discrepancies may be explained in terms of both generational and life cycle factors.
(ROOT (S (NP (NNP Life) (NN cycle)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT the) (NN span)) (PP (IN in) (NP (NP (DT the) (NN life)) (PP (IN of) (NP (NP (DT an) (NN organism)) (PP (IN from) (NP (NP (CD one) (NN generation)) (PP (TO to) (NP (DT the) (JJ next))))))))))))) (. .)))