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Author Question: Wastewater comprises about ________ percent of the flow of U.S. rivers. A) 8 B) 25 C) 15 D) 50 ... (Read 53 times)

Frost2351

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on: Jul 14, 2018
Wastewater comprises about ________ percent of the flow of U.S. rivers.
 
  A) 8
  B) 25
  C) 15
  D) 50
  E) 33

Question 2

Since the 1960s, as a result of automobile modifications (as well as other factors), carbon monoxide emissions in the U.S. have declined by more than three-fourths and ________ emissions by more than 95 percent.
 
  A) nitrogen oxide and hydrocarbon
  B) nitrogen hydroxide and oxygen
  C) nitrogen and oxygenated
  D) sulfur dioxide and bicarbonate
  E) hydrocarbon and sulfur dioxide


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cascooper22

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Reply #1 on: Jul 14, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: A


Frost2351

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Reply 2 on: Jul 14, 2018
Excellent

Missbam101

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Reply 3 on: Yesterday
Gracias!

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