Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.schools.keldysh.ru/labmro/kollekz/PROEKT2/air.htm
Дата изменения: Tue Oct 9 19:47:10 2007
Дата индексирования: Sat Dec 22 01:57:29 2007
Кодировка: Windows-1251

Поисковые слова: earth orbit
загрязнение воздуха

Список проектов

Содержание:

Обращение.

Основная часть:

References
Литература

Eco-glossary
Словарь

Air pollution


Air pollution is one of the most important problems nowadays. This problem is especially urgent in large cities such as Moscow. More than 2,5 million tons of polluted substances are emitted in the atmosphere of Moscow annually. A lot of dangerous gases enter the atmosphere from tall chimneys of factories and power stations. But the leading cause of smog in towns and air pollution is car fumes. It threatens the health of one in five people. The car numbers is increasing. About 80 per cent of air pollution in Moscow is caused by transport. Besides road traffic is the fastest growing cause of carbon dioxide - the main 'greenhouse' gas. Today the air is so polluted in some places that it is not always safe to breathe. Polluted air is also harmful for trees and other plants. The easiest and most effective way to clean up the air is to plant more trees because they absorb carbon dioxide and release oxygen.

My friend and I took pictures of one of the most polluted parts of Moscow - Kapotnya.

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