environmental pollution

topic for discussion # 18 topic for discussion # 9 environmental pollution people have always polluted their surroundings. but until now pollution was not such a serious problem. people lived in uncrowned rural areas and did not have pollution — causing machines. with the development of crowded industrial cities which put huge amounts of pollutants into small areas, the problem has become more important. automobiles and other new inventions make pollution steadily worse. since the late 1960's people have become alarmed with the danger of pollution. air, water, and soil are necessary for existence of all living things. but polluted air can cause illness, and even death. polluted water kills fish and other marine life. on polluted soil, food can …

Этот файл содержит 1 стр. в формате DOC (21,0 КБ). Чтобы скачать "environmental pollution", нажмите кнопку Telegram слева.