Final answer:
The question is about the regulation of pollutants into the atmosphere by different agreements and standards.
Step-by-step explanation:
The subject of this question is United Nations Framework Convention on Climate Change (UNFCCC). The UNFCCC is an international environmental treaty that aims to address climate change by reducing greenhouse gas emissions and promoting sustainable development.
The Paris Agreement is a legally binding international treaty that builds upon the UNFCCC and sets out goals and targets for countries to combat climate change, including the regulation of six pollutants into the atmosphere. The agreement requires countries to submit their nationally determined contributions (NDCs) which outline their efforts to reduce emissions.
The National Ambient Air Quality Standards (NAAQS) is a regulatory framework established by the Environmental Protection Agency (EPA) in the United States. It sets limits on the levels of certain pollutants in the air to protect public health and welfare.
Learn more about Regulating pollutants in the atmosphere