Цитаты из книг автора «Мария Мезенцева»

Water and air pollution are the main problems nowadays. As for water pollution, I can name several reasons of that. Firstly, many lakes, rivers, seas and oceans are polluted with all kinds of technological, chemical and nuclear wastes. Secondly, there is the problem of our sewage system. The sewage from factories and houses pollute natural reservoirs, too.