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Brapbrap Brapbrap
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6 years ago
The gas(es) that has/have the greatest relative contribution to increasing the greenhouse effect is/are ________.
 
  A) carbon dioxide (CO2)
  B) chlorofluorocarbons (CFCs)
  C) methane (CH4)
  D) nitrous oxide (N2O)
  E) ozone (O3)
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6 years ago
A
Brapbrap Author
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6 years ago
Study Force is my secret getaway
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