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Softball612 Softball612
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Posts: 494
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6 years ago
Even though it is 20 times more effective than carbon dioxide as a greenhouse gas, ____________________ is currently less important because it has smaller concentrations and residence times in the atmosphere.
 Fill in the blank(s) with correct word
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jkost7jkost7
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Posts: 379
6 years ago
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Thank you, thank you, thank you!
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Thanks
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