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Which of the following is true of CFCs? A) They are now banned by international treaty. B) They have disappeared in the atmosphere. C) They are very toxic to humans. D) They are not able to exist for long in the atmosphere. E) They are now the most dominant gases in the stratosphere.

/in /by

Which of the following is true of CFCs?
A) They are now banned by international treaty.
B) They have disappeared in the atmosphere.
C) They are very toxic to humans.
D) They are not able to exist for long in the atmosphere.
E) They are now the most dominant gases in the stratosphere.

 
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