( ( Water ( in ( the ( morning ( to ( minimize evaporation ) ) ) ) ) ) . )
(ROOT (NP (NP (NNP Water)) (PP (IN in) (NP (DT the) (NN morning) (S (VP (TO to) (VP (VB minimize) (NP (NN evaporation))))))) (. .)))
Water in the morning  to minimize evaporation.
(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.