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Author Question: More than ____percent of the total PM2.5 particles emissions across the United States in recent ... (Read 34 times)

nramada

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on: Jul 13, 2018
More than ____percent of the total PM2.5 particles emissions across the United States in recent years have been attributed to emissions from wildland fires.
   a. 2
   b. 5
   c. 10
   d. 25
   e. 50

Question 2


  Suspended particles from sources in Europe and the former Soviet Union are believed responsible for the brownish cloud layer called ____ that forms over the Arctic each spring.
   a. the ozone hole
   b. Asian dust
   c. Arctic haze
   d. acid rain
   e. acid fog
   
 


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huda

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Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: c

Answer to Question 2

ANSWER: c


nramada

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Reply 2 on: Jul 13, 2018
Gracias!

bitingbit

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Reply 3 on: Yesterday
Wow, this really help

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