Quimica-PIA
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Bibliografía<br />
https://www.clubensayos.com/buscar/Reacciones+Qu%C3%ADmicas+Y<br />
+El+Calentamiento+Global/pagina1.html<br />
https://es.wikipedia.org/wiki/Calentamiento_global<br />
http://www.ecojoven.com/seis/10/co2.html<br />
http://cambioclimaticoglobal.com/que-es-el-calentamiento-global