Why should we be concerned about Global Warming

Global Warming is the greatest environmental threat of the 21st Century. The causes and effects of global warming. Explanation of the effects of global warming in both MEDCs and LEDCs. Evaluation of the different viewpoints held about global warming.

25.04.2014 | Ecology | Экология и охрана природы | Язык: английский | Просмотры: 134