II. Put in the missing words:

1. Today the biggest... is the car.

2. Ozone is useful in small ..., but it is extremely ... in large quantities.

3. Governments build new ... to improve the situation.

4. The number of... is increasing every year.

5. Atomic ... became much more powerful after the atomic ... had been dropped on Japanese cities.

6. Sometimes forest... occur as a result of lightning.

7. Industry ... the air by emissions of harmful ... and ... dust.

Ш. Find in the text the English equivalents for the expressions below:

1) лесные пожары; 2) основной источник атмосферного загрязнения; 3) сжигание угля; 4) улучшить ситуацию; 5) городские районы; 6) различать источники загрязнения воздуха; 7) установлено, что; 8) химический состав выбросов в атмосферу; 9) плохое качество воздуха; 10) подсчитано, что.

WATER POLLUTION

Vocabulary

urgent безотлагательный

poisoned отравленный

water resources водные ресурсы

sewerage сточные воды

to face

fresh water supply

to take measures

to prevent

to reduce

to dump

oil spills

agricultural chemicals

thermal pollution

to get into

to cause damage

to wreck

water desalination plants

affected

to clean up

oil slicks

natural dispersion

to remove

crops yield

to wash away

coolant

to migrate

столкнуться

обеспечение питьевой водой

принимать меры

предотвратить

сократить

сбрасывать

разливы нефти

сельскохозяйственные химические

препараты

тепловое загрязнение

попадать в

наносить ущерб

разрушать

опреснительные заводы

пораженный чем-то

очистить

нефтяные пятна

естественное рассеивание

удалять

сбор урожая

вымывать

охладитель

переселяться

Water pollution is one of the most urgent environmental problems today. Rivers and seas that used to be so beautiful and full of fish are poisoned. About half of the water resources is polluted with industrial or sewerage waste in our country. Some regions have to face the fresh-water supply problem. Fortunately, governments have started taking measures to prevent further water resources pollution and reduce the dumping harmful substances into seas and rivers.

There arc several threats to our water resources: oil spills from tanker acci­dents, oil from other sources, agricultural chemicals, thermal pollution and ra­dioactive pollution.

Oil can get into the sea from many sources and cause much damage. Oil spills kill thousands of seabirds and can wreck water desalination plants and in­dustrial plants drawing their water from affected coast-lines. There are currently

only three ways to remove oil slicks: natural dispersion, chemical dispersion, collection. Using natural dispersion we leave oil slicks to disperse and break down naturally. Most of the oil is dispersed this way even when other clean-up methods are used. The best way to clean up water surface is to collect oil. It is removed completely from the environment and can be used again.

Much of water pollution is caused by chemicals, mainly from agriculture. Fertilizers and pesticides are used to increase crops yields all over the world. Very often they are washed away into rivers and seas.

Another kind of pollution is thermal pollution. For many years water has been used as a coolant in industry, especially in power stations. Changes in tem­perature make fish to migrate to the regions where the water is the best for them. Higher temperature can kill any species which can't move away.