( ( Selected topics ) ( ( include ( ( ( ( ( -LRB- ( a -RRB- ) ) ( ( ( ( ( air ( and ( water pollution ) ) ) , ) ( ozone layer ) ) , ) ( global ( warming ( , ( acid rain ) ) ) ) ) ) , ) and ) ( other ( environmental chemistry ) ) ) ) ; ) )
(ROOT (S (NP (JJ Selected) (NNS topics)) (VP (VBP include) (NP (NP (LST (-LRB- -LRB-) (DT a) (-RRB- -RRB-)) (NP (NN air) (CC and) (NN water) (NN pollution)) (, ,) (NP (NN ozone) (NN layer)) (, ,) (VP (VBG global) (NP (NN warming) (, ,) (NN acid) (NN rain)))) (, ,) (CC and) (NP (JJ other) (JJ environmental) (NN chemistry)))) (: ;)))
Selected topics include (a) air and water pollution, ozone layer, global warming, acid rain, and other environmental chemistry;
(ROOT (S (NP (NNP Air) (NN pollution)) (VP (VBZ causes) (NP (NP (JJ acid) (NN rain)) (, ,) (NP (NN ozone) (NN depletion)) (, ,) (CC and) (NP (JJ global) (NN warming)))) (. .)))