Match list I with list II and select the correct answer using the codes given below:
| List I | List II |
| A. Global warming | 1. Oxides of Nitrogen and Sulphur |
| B. Acid rain | 2. Airport |
| C. Noise pollution | 3. Decibel |
| D. Noise level | 4.Greenhouse effect |
| 5. Nuclear tests |
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