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Author Question: Transportation is the source for 77 percent of this pollutant. A) carbon monoxide B) nitrogen ... (Read 100 times)

piesebel

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on: Jul 14, 2018
Transportation is the source for 77 percent of this pollutant.
 
  A) carbon monoxide
  B) nitrogen oxides
  C) sulfur dioxide
  D) volatile organic compounds

Question 2

Since 1990, average ________ levels in the US have consistently been below the national standard.
 
  A) CO
  B) ozone
  C) PM10
  D) CO and PM10


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Jayson

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

Answer: A

Answer to Question 2

Answer: D


piesebel

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Reply 2 on: Jul 14, 2018
:D TYSM

peter

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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