( ( Problems addressed ) ( ( include ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ozone depletion ) , ) ( global warming ) ) , ) deforestation ) , ) desertification ) , ) ( acid rain ) ) , ) ( endangered species ) ) , ) ( population explosion ) ) , ) ( air ( and ( water pollution ) ) ) ) , ) ( among ( many others ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Problems)) (VP (VBN addressed))) (VP (VBP include) (NP (NP (NN ozone) (NN depletion)) (, ,) (NP (JJ global) (NN warming)) (, ,) (NP (NN deforestation)) (, ,) (NP (NN desertification)) (, ,) (NP (JJ acid) (NN rain)) (, ,) (NP (JJ endangered) (NNS species)) (, ,) (NP (NN population) (NN explosion)) (, ,) (NP (NN air) (CC and) (NN water) (NN pollution)) (, ,) (PP (IN among) (NP (JJ many) (NNS others))))) (. .)))
Problems addressed include ozone depletion, global warming, deforestation, desertification, acid rain, endangered species, population explosion, air and water pollution, among many others.
(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)))) (. .)))