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Author Question: Select the substance that is thought to be partially responsible for depleting the concentration of ... (Read 19 times)

Mollykgkg

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Select the substance that is thought to be partially responsible for depleting the concentration of ozone in the stratosphere.
 
  A) CFCl3
  B) CO2
  C) O2
  D) N2
  E) He

Question 2

The two allotropic forms of phosphorus are ________ and ________.
 
  A) black, red
  B) white, black
  C) white, yellow
  D) white, red
  E) black, yellow



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kswal303

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Answer to Question 1

A

Answer to Question 2

D




Mollykgkg

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Reply 2 on: Aug 27, 2018
:D TYSM


Zebsrer

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Reply 3 on: Yesterday
Gracias!

 

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