| 21. | When added to water or wine, sulfur dioxide becomes sulfites.
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| 22. | More carbon dioxide emissions, rather than fewer, from factories?
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| 23. | He has refused to limit carbon dioxide emissions from power plants.
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| 24. | After trapping adult skunks, he gasses them with carbon dioxide.
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| 25. | Plants use sunlight to turn water and carbon dioxide into glucose.
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| 26. | Chlorine dioxide is also used in bleaching paper and purifying water.
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| 27. | Could these weekly carbon dioxide cycles cause corresponding variations in climate?
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| 28. | Sparkling water's carbon dioxide delivers more than just fizz.
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| 29. | When sugar meets yeast, it produces alcohol and carbon dioxide.
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| 30. | Other fossil-fuel pollutants include nitrogen oxide and sulfur dioxide.
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