Автор работы: Пользователь скрыл имя, 29 Сентября 2012 в 06:14, реферат
As we can see in the past, the development of the humanity cannot happen without affection on the environment. In response to this action, The UN and other environmental organizations began publishing reports and convening conferences where they developed different methods and hypothesis for preventing eco disasters and creating new ways to product energy sources.