Ecology
Factors threatening the environment. Habitat destruction and species extinction. Depletion of the ozone layer. The living portion of an ecosystem. The environment in the new millennium: the way of the world. The crisis of ecology in the developing world.
| Рубрика | Иностранные языки и языкознание |
| Вид | статья |
| Язык | английский |
| Дата добавления | 21.11.2009 |
| Размер файла | 47,8 K |
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