Which of the statements given below in context of global carbon budget is correct?
1
As per the United Nations Framework Convention on Climate Change (UNFCCC), both developing and developed nations share equal responsibilities in combating climate change.
2
The 'global carbon budget' is a term that refers to the theoretical maximum amount of carbon dioxide emissions that could be produced without causing dangerous interference with the climate system.
3
As per the AR6 IPCC report, developing countries have used more of the global carbon budget than developed countries.
4
According to the Sixth Assessment Report (AR6) by IPCC, the world needs to reach net-zero carbon emissions by 2050 to keep warming below 1.5°C with a 50% chance.