( ( ( ( ( ( Deciduous trees ) ( predominate ( in ( most ( of ( these forests ) ) ) ) ) ) , ) and ) ( ( during ( the drought ) ) ( ( a ( leafless period ) ) ( ( occurs , ) ( which ( varies ( with ( species type ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (JJ Deciduous) (NNS trees)) (VP (VBP predominate) (PP (IN in) (NP (NP (JJS most)) (PP (IN of) (NP (DT these) (NNS forests))))))) (, ,) (CC and) (S (PP (IN during) (NP (DT the) (NN drought))) (NP (DT a) (NNS leafless) (NN period)) (VP (VBZ occurs) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ varies) (PP (IN with) (NP (NN species) (NN type)))))))) (. .)))
Deciduous trees predominate in most of these forests, and during the drought a leafless period occurs, which varies with species type.
(ROOT (S (SBAR (IN Because) (S (NP (NNS trees)) (VP (VBP add) (NP (NN water) (NN vapor)) (PP (TO to) (NP (NN air)))))) (, ,) (S (VP (VBG cutting) (PRT (RP down)) (NP (NNS forests)))) (VP (VBZ leads) (PP (TO to) (NP (NP (JJR longer) (NNS periods)) (PP (IN of) (NP (NN drought)))))) (. .)))