UNFCCC (United Nations Framework Convention on Climate Change) enters into force from :

Question

Accepted Answer

The United Nations Framework Convention on Climate Change (UNFCCC) is a significant international treaty aimed at addressing climate change and its impacts. It was adopted during the Earth Summit held in Rio de Janeiro in 1992. However, the date when a treaty is adopted is different from when it enters into force. A treaty enters into force when a specified number of countries have ratified or acceded to it, making it legally binding for those countries.

1. **Explanation for Option 4 (21 March, 1994):**
   - The UNFCCC entered into force on 21 March 1994. This date marks the point when the required number of countries had ratified the convention, allowing it to become legally effective. The entry into force is a crucial step in the treaty process, as it signifies that the commitments outlined in the treaty are now binding for the parties that have ratified it. This is why Option 4 is the correct answer.

2. **Explanation for why other options are incorrect:**
   - **Option 1 (10 May, 1992):** This date is incorrect because it precedes the adoption of the UNFCCC, which took place on 9 May 1992. Therefore, it cannot be the date when the convention entered into force.
   - **Option 2 (5 June, 1992):** This date is also incorrect as it is shortly after the adoption of the convention but well before the required number of ratifications were achieved for it to enter into force.
   - **Option 3 (5 June, 1994):** While this date is closer to the correct entry into force date, it is still incorrect. The convention had already entered into force by this time, specifically on 21 March 1994.

In summary, Option 4 is the correct answer because it accurately reflects the date when the UNFCCC became legally binding, following the necessary ratifications by member countries.