Environmental contamination

People have always polluted their surroundings. Automobiles and other new inventions make pollution steadily worse. Scientists and engineers can find the ways to reduce pollution from automobiles and factories. Factories pollute the air and the water.

Рубрика Экология и охрана природы
Предмет Ecology
Вид презентация
Язык английский
Прислал(а) Алина Литвинова
Дата добавления 25.01.2012
Размер файла 1,0 M

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