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Author Question: The abundance of oxygen and ozone in Earth's atmosphere can be explained only through biology. ... (Read 16 times)

EY67

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The abundance of oxygen and ozone in Earth's atmosphere can be explained only through biology.
 
  Indicate whether the statement is true or false

Question 2

Although it is difficult to tell from our vantage point inside the galaxy, astronomers suspect that the Milky Way is a barred spiral.
 
  Indicate whether the statement is true or false



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Chelseyj.hasty

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Answer to Question 1

TRUE

Answer to Question 2

TRUE




EY67

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Reply 2 on: Jul 27, 2018
Wow, this really help


TheNamesImani

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

 

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