( ( As ( the ( water evaporates ) ) ) ( it ( ( ( creates humidity ) ( around ( the plants ) ) ) . ) ) )
(ROOT (S (PP (IN As) (NP (DT the) (NN water) (NNS evaporates))) (NP (PRP it)) (VP (VBZ creates) (NP (NN humidity)) (PP (IN around) (NP (DT the) (NNS plants)))) (. .)))
As the water evaporates it creates humidity around the plants.
(ROOT (S (NP (NNP Humidity) (NNP happens)) (VP (VBZ happens) (SBAR (WHADVP (WRB when)) (S (NP (JJ liquid) (NN water)) (VP (VBZ evaporates))))) (. .)))