Consider the following pairs:
| International Convention | Subject | |
| 1. | Vienna Convention | Ozone layer Protection |
| 2. | UNCCD | Sustainable Land Management |
| 3. | Ramsar Convention | Conservation of wetlands |
| 4. | Basel Convention | Pesticides and Industrial Chemicals |
How many of the above pairs are correctly matched?
1
Only one pair
2
Only two pairs
3
Only three pairs
4
More than one of the above
5
None of the above