Calentamiento Global

Calentamiento GlobalPresentado por:Angel Ernesto Romero EscalanteRE100305

URL del video:https://www.youtube.com/watch?v=R-XmKD_wmPQ

URL del video:https://www.youtube.com/watch?v=R-XmKD_wmPQ2URL del Video:https://www.youtube.com/watch?v=nJ0SySwgvEQ

https://www.youtube.com/watch?v=nJ0SySwgvEQ3URL de video: https://www.youtube.com/watch?v=nRqYadXcYPk

https://www.youtube.com/watch?v=nRqYadXcYPk4URL de video:https://www.youtube.com/watch?v=RjT56iqfRg0

https://www.youtube.com/watch?v=RjT56iqfRg05