The water pollution

Water pollution is a large set of adverse effects upon water bodies such as lakes, rivers, oceans, and groundwater caused by human activities. Sources of water pollution. Water pollution in Belarus. Man-made water systems. Natural water contamination.

Рубрика Экология и охрана природы
Предмет Ecology
Вид реферат
Язык английский
Прислал(а) Катя
Дата добавления 19.11.2011
Размер файла 17,0 K

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