( ( In turn ) ( , ( ( the ( increased ozone ) ) ( ( ( warms ( ( ( ( the stratosphere ) , ) ( ( a region ) ( from ( ( ( about ( ( 6 to ) 30 ) ) miles ) ( up ( in ( the atmosphere ) ) ) ) ) ) ) , ) ) ( by ( trapping ( heat energy ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NN turn))) (, ,) (NP (DT the) (VBN increased) (NN ozone)) (VP (VBZ warms) (NP (NP (DT the) (NN stratosphere)) (, ,) (NP (NP (DT a) (NN region)) (PP (IN from) (NP (NP (QP (RB about) (CD 6) (TO to) (CD 30)) (NNS miles)) (ADVP (RB up) (PP (IN in) (NP (DT the) (NN atmosphere))))))) (, ,)) (PP (IN by) (S (VP (VBG trapping) (NP (NN heat) (NN energy)))))) (. .)))
In turn, the increased ozone warms the stratosphere , a region from about 6 to 30 miles up in the atmosphere, by trapping heat energy.
(ROOT (S (NP (DT The) (NN stratosphere)) (VP (VBZ is) (NP (DT the) (NN heat) (NN source))) (. .)))