( Temperatures ( generally ( ( decrease ( with ( increasing altitude ) ) ) . ) ) )
(ROOT (S (NP (NNS Temperatures)) (ADVP (RB generally)) (VP (VB decrease) (PP (IN with) (NP (VBG increasing) (NN altitude)))) (. .)))
Temperatures generally decrease with increasing altitude.
(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)))) (. .)))