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Author Question: Halogenated gases are purely anthropogenic and have no natural sources. Indicate whether the ... (Read 16 times)

CQXA

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on: Jul 14, 2018
Halogenated gases are purely anthropogenic and have no natural sources.
 
  Indicate whether the statement is true or false

Question 2

So far, the Arctic region has been free of air pollution.
 
  Indicate whether the statement is true or false


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jaygar71

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

TRUE

Answer to Question 2

FALSE


CQXA

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Reply 2 on: Jul 14, 2018
Gracias!

Viet Thy

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Reply 3 on: Yesterday
:D TYSM

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