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Author Question: Naturally occurring reactions of oxygen (O2 ) are always desirable. Indicate whether the ... (Read 15 times)

jerry coleman

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on: Aug 27, 2018
Naturally occurring reactions of oxygen (O2 ) are always desirable.
 
  Indicate whether the statement is true or false

Question 2

Commercial airplanes fly in the
 
  A) biosphere.
  B) stratosphere.
  C) troposphere.
  D) ionosphere.


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bitingbit

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Reply #1 on: Aug 27, 2018
Answer to Question 1

FALSE

Answer to Question 2

B


jerry coleman

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Reply 2 on: Aug 27, 2018
Great answer, keep it coming :)

duy1981999

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Reply 3 on: Yesterday
Wow, this really help

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