( ( lower atmosphere ) ( ( ( Generally ( , ( and ( ( quite loosely ) , ) ) ) ) ( ( that part ) ( of ( ( ( the atmosphere ) ( ( in which ) ( ( most ( weather phenomena ) ) occur ) ) ) ( -LRB- ( i.e. ( , ( ( ( ( the troposphere ) and ) ( lower stratosphere ) ) -RRB- ) ) ) ) ) ) ) ) ; ) )
(ROOT (S (NP (JJR lower) (NN atmosphere)) (VP (VBZ Generally) (PRN (, ,) (CC and) (ADVP (RB quite) (RB loosely)) (, ,)) (NP (NP (DT that) (NN part)) (PP (IN of) (NP (NP (DT the) (NN atmosphere)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (JJS most) (NN weather) (NNS phenomena)) (VP (VBP occur)))) (PRN (-LRB- -LRB-) (FW i.e.) (, ,) (ADJP (NP (DT the) (NN troposphere)) (CC and) (ADJP (RBR lower) (JJ stratosphere))) (-RRB- -RRB-)))))) (: ;)))
lower atmosphere Generally, and quite loosely, that part of the atmosphere in which most weather phenomena occur (i.e., the troposphere and lower stratosphere );
(ROOT (S (NP (DT The) (NN stratosphere)) (VP (VBZ is) (NP (DT the) (NN heat) (NN source))) (. .)))