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