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Air Pollution and Environmental Resources - Class VI

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Multiple Choice

Which is a green house gas?
A) Methane 

B) Chlorofluorocarbons 
C) $CO _{2}$

  1. $A$ and $B$
  2. $B$ and $C$
  3. $C$ and $D$
  4. $A, B$ and $C$
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