( Air ( ( ( is not ) ( ( ( only ( moistened ( in ( the ( nasal cavity ) ) ) ) ) but ) ( ( warmed , ) ( as well ) ) ) ) . ) )
(ROOT (S (NP (NNP Air)) (VP (VBZ is) (RB not) (VP (VP (ADVP (RB only)) (VBN moistened) (PP (IN in) (NP (DT the) (JJ nasal) (NN cavity)))) (CC but) (VP (VBN warmed) (, ,) (ADVP (RB as) (RB well))))) (. .)))
Air is not only moistened in the nasal cavity but warmed, as well.
(ROOT (S (PP (IN In) (NP (NNS mammals))) (, ,) (NP (NN air)) (VP (VBZ is) (VP (VBN warmed) (CC and) (VBN humidified) (PP (IN in) (NP (DT the) (JJ nasal) (NN cavity))))) (. .)))