International environmental agreement environmental cooperation, marine and the oceans, and meteorology. Canada has taken an initiative due to the country's variety of natural resources, climates and populated areas, all of which can contribute to environmental stress. The United States has committed to the Montreal Protocol on Substances that Deplete the Ozone Layer, and global negotiations on mercury. The number of MEAs in which the U.S. is involved is substantially lower than Canada's, despite its greater population and larger carbon footprint and economy. International environmental agreement An international environmental agreement or sometimes environmental protocol, is a type of treaty binding in international law, allowing
Montreal Protocol and HCFCs. Thus, in 2009, a study calculated that a fast phasedown of high-GWP HFCs could potentially prevent the equivalent of up to 8.8 Gt CO2-eq "per year" in emissions by 2050. A proposed phasedown of HFCs was hence projected to avoid up to 0.5C of warming by 2100 under the high-HFC growth scenario, and up to 0.35C under the low-HFC growth scenario. Recognizing the opportunity presented for fast and effective phasing down of HFCs through the Montreal Protocol, starting in 2009 the Federated States of Micronesia proposed an amendment to phase down high-GWP HFCs, with the U.S., Canada, and