Which was a major cause of environmental pollution in American cities during the late 1800s?

A.
chemicals used in dry cleaning shops

B.
dust storms blowing in from the Great Plains

C.
wastewater discharge from hydroelectric power plants

D.
large numbers of horses used for transportation

Question

Which was a major cause of environmental pollution in American cities during the late 1800s?  
 
 

 
 

  

  A. 
  chemicals used in dry cleaning shops   
   

 
 

  

  B. 
  dust storms blowing in from the Great Plains   
   

 
 

  

  C. 
  wastewater discharge from hydroelectric power plants   
   

 
 

  

  D. 
  large numbers of horses used for transportation

confluxepic · Answer

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confluxepic · Answer

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confluxepic · Answer

The answer is C.