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ub|k ub|k
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6 years ago
As American cities developed, some city officials introduced filtration, which accounted for what percent of urban residents' water supply by the early twentieth century?
 
  a. 6 percent
  b. 26 percent
  c. 56 percent
  d. 96 percent
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doctorfededoctorfede
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6 years ago
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ub|k Author
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6 years ago
This helped my grade so much Perfect
jbarnett14
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Yesterday
Thank you, thank you, thank you!
Cdfields
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2 hours ago
Brilliant ツ
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