( ( ( troposphere , ) ( stratosphere ( , ( mesosphere ( , ( and ionosphere ) ) ) ) ) ) . )
(ROOT (NP (NP (NNP troposphere)) (, ,) (NP (NN stratosphere) (, ,) (NN mesosphere) (, ,) (CC and) (NN ionosphere)) (. .)))
troposphere, stratosphere, mesosphere, and ionosphere.
(ROOT (S (NP (DT The) (NN stratosphere)) (VP (VBZ is) (NP (NP (DT the) (NN layer)) (PP (IN above) (NP (DT the) (NNP troposphere))))) (. .)))