1870-3925 1870-3925 S1870-39252021000100118 10.22198/rys2021/33/1432 México México México USA México 00 00 2021 00 00 2021 33

1999 35 35 2019 31 31 2012 2013 7 2 2 65-83 2020 77 77 33-46 2013 2005 2007 131-41 2020 2016 38 38 153-70 2011 2008 61 61 51-72 2017 947 947 7-26 2006 4 1 1 112-35 2014 19 19 1-6 2016 1966 1991 1970 2016 44 44 111-22 1985 1996 2004 123-60 2009 4 4 49-58 2015 2015 2012 12 4 4 484-502 2017 29 70 70 31-70 2015 1998 100 1 1 136-47 1988 38 8 8 673-8 1988 Montecillo, México Intergovernmental Panel on Climate Change 2014 2012 25 72 72 22-6 2012 2007 2006 1849 1 1 1-27 2019 43 7-8 7-8 810-26 2010 62 3 3 357-76 2017 9 5 5 705 2016 12 2008 14 27 27 129-44 1957 2013 XLII XLII 87-118 2015 2013 11 11 e45-54 2020 4 91 Organización de Naciones Unidas 2020 2019 9 9 2008 2015 2020 12 25 25 1991 San Cristóbal de Las Casas 2003 2016 17 35 35 21 2018 2021 89 89 8-31 2016 25 47 47 275-99 2017 2017 2016 11 2 2 23-30 2018 15 15 531-9 2021 Secretaría de Medo Ambiente y Recursos Naturales 2006 2011 2014 2009 1995 4 4 363-81 2014 126 126 3-14 2017 2020 4 4 95 2010 2006 11 1 1 13