( ( ( Anthropogenic depletion ) ( in ( dissolved oxygen ) ) ) ( ( can ( be ( caused ( by ( ( ( ( ( ( ( ( ( the presence ) ( of ( organic materials ) ) ) , ) ( such ( as sewage ) ) ) , ) ( discharge ( from ( food ( processing plants ) ) ) ) ) , ) and ) ( decaying ( ( plants and ) animals ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Anthropogenic) (NN depletion)) (PP (IN in) (NP (JJ dissolved) (NN oxygen)))) (VP (MD can) (VP (VB be) (VP (VBN caused) (PP (IN by) (NP (NP (NP (DT the) (NN presence)) (PP (IN of) (NP (JJ organic) (NNS materials)))) (, ,) (PP (JJ such) (IN as) (NP (NN sewage))) (, ,) (NP (NP (NN discharge)) (PP (IN from) (NP (NN food) (NN processing) (NNS plants)))) (, ,) (CC and) (NP (VBG decaying) (NNS plants) (CC and) (NNS animals))))))) (. .)))
Anthropogenic depletion in dissolved oxygen can be caused by the presence of organic materials, such as sewage, discharge from food processing plants, and decaying plants and animals.
(ROOT (S (NP (NNS Plants)) (VP (CONJP (RB not) (JJ only)) (VP (VBP contribute) (NP (NN food))) (CC but) (VP (VBD oxygen) (PP (IN for) (NP (NNS organisms))))) (. .)))