( ( In ( the mesosphere ) ) ( temperature ( ( decreases ( as ( ( the altitude ) increases ) ) ) . ) ) )
(ROOT (S (PP (IN In) (NP (DT the) (NN mesosphere))) (NP (NN temperature)) (VP (VBZ decreases) (SBAR (IN as) (S (NP (DT the) (NN altitude)) (VP (VBZ increases))))) (. .)))
In the mesosphere temperature decreases as the altitude increases.
(ROOT (S (PP (IN As) (NP (NN altitude) (NNS rises))) (, ,) (NP (DT the) (NN temperature)) (VP (VBZ increases) (PP (IN in) (NP (DT the) (NN thermosphere)))) (. .)))