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Question
Match the following
| 1. | Nitrogen | a. | Acid rain |
| 2. | CO2 | b. | Global warming |
| 3. | Melting of glaciers | c. | Volcanic gases |
| 4. | Corrosion of bridges | d. | Aerated drinks |
Match the Columns
Solution
| 1. | Nitrogen | c. | Volcanic gases |
| 2. | CO2 | d. | Aerated drinks |
| 3. | Melting of glaciers | b. | Global warming |
| 4. | Corrosion of bridges | a. | Acid rain |
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