( ( As ( air rises ) ) ( , ( ( ( the moisture ) ( in ( the ( rising air ) ) ) ) ( ( ( ( ( cools , ) condenses ) and ) ( forms ( ( clouds and ) precipitation ) ) ) . ) ) ) )
(ROOT (S (PP (IN As) (NP (NN air) (NNS rises))) (, ,) (NP (NP (DT the) (NN moisture)) (PP (IN in) (NP (DT the) (VBG rising) (NN air)))) (VP (VP (VBZ cools)) (, ,) (VP (VBZ condenses)) (CC and) (VP (VBZ forms) (NP (NNS clouds) (CC and) (NN precipitation)))) (. .)))
As air rises, the moisture in the rising air cools, condenses and forms clouds and precipitation .
(ROOT (NP (NP (NP (VBG Rising)) (CC and) (NP (VBG sinking) (NN air) (NNS influences))) (VP (VBN precipitation) (PP (IN in) (NP (DT a) (NN region)))) (. .)))