FUENTES DE CONSULTA

http://www.occiminerales.com/origen-del-carbon.html

http://www.iie.org.mx/boletin042009/divulga.pdf

http://www.ehowenespanol.com/efectos-contaminacion-del-aire-salud-medio-ambiente-sobre_148165/

http://www.sierraclub.org/designarchive/factsheets/beyondcoal/099%20CarbonPollution%20Spanish/high99_CarbonPollutionProtection_FactSht_Span.pdf

http://www.bvsde.paho.org/cursoa_orientacion/cap8c.pdf

http://www.homohominisacrares.net/sec/ecologia/co2/co2.htm

http://quimicaiii608.blogspot.mx/2012/03/caracteristicas-del-combustible-carbon.html