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which two gases have been added to Earth's atmosphere in large amounts and are believed to have increased global warming by absorbing infrared radiation

which two gases have been added to Earth's atmosphere in large amounts and are believed to have increased global warming by absorbing infrared radiation?
1. neon and argon 2. chlorine and nitrogen 3. hydrogen and helium 4. methane and carbon dioxide
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which two gases have been added to Earth's atmosphere in large amounts and are believed to have increased global warming by absorbing infrared radiation
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