ECOLOGY, Is it social problem?

I. Watch the following clips related in Ecological disasters.

• Chernobyl  https://www.youtube.com/watch?v=B7lzF06yoM0
• Desastre del Exxon https://www.youtube.com/watch?v=VaRdUHrUnBs
• Calentamiento Global http://video.nationalgeographic.com/video/101-videos/global-warming-101http://video.nationalgeographic.com/video/101-videos/global-warming-101
• Agua Potable https://www.youtube.com/watch?v=iRGZOCaD9sQ

II. Develop a synoptic chart describing each ecological disaster. Also give your opinion as a conclusion matter about findings.