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OpenStudy (anonymous):

Which did not contribute to New York City's terrible pollution problems in the late 1800s? A.horse and pig manure B.oil refineries C.insufficient sanitary services D.pneumatic subway

OpenStudy (anonymous):

YEAH ITS D |dw:1400258916682:dw|

OpenStudy (anonymous):

|dw:1400258937103:dw|

OpenStudy (anonymous):

hank you so much <3

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