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Author Question: The concentration of ____________________ is close to 21 percent (by volume) in the upper ... (Read 17 times)

pragya sharda

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on: Jul 13, 2018
The concentration of ___________________ _ is close to 21 percent (by volume) in the upper stratosphere (the same concentration as in the trophosphere), but without proper breathing apparatus you would not be able to survive there.
   
  Fill in the blank with correct word.

Question 2

The ozone hole is located over ___________________ _.
   
  Fill in the blank with correct word.


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tofugiraffe

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

ANSWER: oxygen

Answer to Question 2

ANSWER: Antarctica


pragya sharda

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Reply 2 on: Jul 13, 2018
Great answer, keep it coming :)

Kedrick2014

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Reply 3 on: Yesterday
Wow, this really help

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