( ( Campus workers ) ( ( ( should also ) ( attempt ( to ( ( ( fulfill ( their part ) ) ( in ( water conservation ) ) ) ( by ( ( ( ( ( watering ( ( the ( ( flowers and ) grass ) ) ( on campus ) ) ) ( in ( the ( early ( ( morning or ) late ) ) ) ) ) night ) , ) ( when ( ( water evaporation ) ( is minimal ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Campus) (NNS workers)) (VP (MD should) (ADVP (RB also)) (VP (VB attempt) (S (VP (TO to) (VP (VB fulfill) (NP (PRP$ their) (NN part)) (PP (IN in) (NP (NN water) (NN conservation))) (PP (IN by) (S (VP (VBG watering) (NP (NP (DT the) (NNS flowers) (CC and) (NN grass)) (PP (IN on) (NP (NN campus)))) (PP (IN in) (NP (DT the) (JJ early) (NN morning) (CC or) (RB late))) (NP (NN night)) (, ,) (SBAR (WHADVP (WRB when)) (S (NP (NN water) (NN evaporation)) (VP (VBZ is) (ADJP (JJ minimal))))))))))))) (. .)))
Campus workers should also attempt to fulfill their part in water conservation by watering the flowers and grass on campus in the early morning or late night, when water evaporation is minimal.
(ROOT (S (NP (NP (VBG Watering) (NNS plants)) (CC and) (NP (NP (NN grass)) (PP (IN in) (NP (DT the) (JJ early) (NN morning))))) (VP (VBZ is) (NP (DT a) (NN way) (S (VP (TO to) (VP (VB conserve) (NP (NN water)) (SBAR (IN because) (S (NP (NP (JJR smaller) (NNS amounts)) (PP (IN of) (NP (NN water)))) (VP (VB evaporate) (PP (IN in) (NP (DT the) (JJ cool) (NN morning))))))))))) (. .)))
Watering plants and grass in the early morning is a way to conserve water because smaller amounts of water evaporate in the cool morning.