Consider the following pairs: Terms sometimes seen in the news : Their origin 1. Annex-I Countries : Cartagena Protocol 2. Certified Emissions Reductions : Nagoya Protocol 3. Clean Development Mechanism : Kyoto Protocol Which of the pairs given above is/are correctly matched?

Let's analyze each pair:

1. Annex-I Countries : Cartagena Protocol: This pair is incorrectly matched. 'Annex-I Countries' refer to industrialized countries and economies in transition that have committed to targets for reducing greenhouse gas emissions under the Kyoto Protocol to the UNFCCC. The Cartagena Protocol on Biosafety, on the other hand, deals with the safe handling, transport, and use of living modified organisms (LMOs).

2. Certified Emissions Reductions : Nagoya Protocol: This pair is incorrectly matched. 'Certified Emissions Reductions (CERs)' are units generated from Clean Development Mechanism (CDM) projects under the Kyoto Protocol, representing a reduction of one metric tonne of carbon dioxide equivalent. The Nagoya Protocol on Access to Genetic Resources and the Fair and Equitable Sharing of Benefits Arising from their Utilization (ABS) relates to biodiversity, not carbon emissions.

3. Clean Development Mechanism : Kyoto Protocol: This pair is correctly matched. The 'Clean Development Mechanism (CDM)' is one of the three market-based mechanisms established under the Kyoto Protocol to help Annex I countries meet their emission reduction targets by investing in emission reduction projects in developing countries.

Therefore, only pair 3 is correctly matched.