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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