( ( ( Altitude ( , ( temperature ( , ( and air ) ) ) ) ) pressure ) . )
(ROOT (NP (NP (NN Altitude) (, ,) (NN temperature) (, ,) (CC and) (NN air)) (NP (NN pressure)) (. .)))
Altitude, temperature, and air pressure.
(ROOT (S (NP (NNP Air) (NN temperature)) (VP (VBZ changes) (PP (IN as) (NP (NN altitude) (NNS increases)))) (. .)))