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3.1. Translate the following words into Russian and analyze the parts of speech:

immensity, immensely, perfectly, inability, disastrous, disappearance, harmless, reproduction, immediately, wreckage, dispersive, dispersion.

3.2. Give derivatives of the following verbs and translate them:

to research, to appear, to be able, to benefit, to wreck, to pollute, to harm, to develop, to establish.

Comprehension

1. Paraphrase the italicized words and word-combinations:

1. Now that rivers and lakes have become clogged with our garbage, we begin to use the sea as a receptacle for everything from the raw sewage of cities to the wastes of industry.

2. If 54 000 tons of any substance were thrown into the North Sea and thoroughly disseminated; it would show up in a concentration only one part per billion.

3. Investigators have found that the most immediate danger to the ocean are pesticides which are present in sea water in very small quantities and are unevenly diluted.

4. To prevent the danger of water pollution we must learn more about the ocean and the life it contains to enable us to discover changes both disastrous and useful.

2. Pick out from the text sentences or parts of sentences showing:

1) why the sea has a limited capacity to hide anything we might throw into it;

2) why water pollution is especially dangerous for the Arctic environment;

3) why scientists consider pesticides to be the most immediate danger to the ocean;

4) what measures have been undertaken to avert marine pollution.

3. Translate into English:

1. Учёные считают, что море становится огромной сточной трубой.

2. Озёра, реки и моря засоряются нашими отходами.

3. Северное море используется как хранилище для городских и промышленных отходов.

4. 117 000 тонн неочищенной нефти попало в море и при взаимодействии с 10 000 тоннами очищающих средств убило большую часть морской жизни.

5. Пестициды присутствуют в море в незначительных количествах, но они распределены неравномерно.

6. Чтобы предотвратить мировое загрязнение океана, следует постоянно проводить контроль загрязнения воды.

4. Retell the text using the plan below:

1.The sea is not the sewer.

2. Oil pollution of the sea.

3. Pesticides.

4. Monitoring marine pollution.

Read the texts 3, 4 and 5 and express the main idea of each text in 2-3 sentences.

Text 3

Dioxides launch а new attack on our nature

Dioxides are especially dangerous when they enter the environment together with metallurgical wastes, while chlorine is added to drinking water, while sewage is cleaned using biological methods; when herbicides and defoliants are used. Dioxides act in the same way as AIDS virus destroying the immune system of various organisms and causing genetic faults and deviations of embryos. High concentration of chlorine organic pesticides in the surrounding environment and addition of chlorine into the drinking water (especially high dozes of chlorine in water pipes during the periods-of floods) raise the issue of strict control over the concentration of dioxides in raw materials, food and industrial products. Ву this time, developed countries of the West gradually re equipped dangerous dioxide-using production lines and were able to dramatically decrease the injection of dioxides into the environment, however it has not been possible to to neutralize the consequences of their influence on the immune system.

Oxidized water absorbs poisonous metals from the upper layer of soil and dissolves them in the tubes polluting the drinking water. The problem is made more difficult by ozone pollution - reaction of nitrogen oxides and organic pollutants results in the appearance of the specific "smog". Ozone is а form of molecular oxygen, presence of which in the stratosphere (upper layer of the atmosphere) is important because it blocks dangerous ultra-violet sun rays. The danger is that the same molecules in the troposphere {lower layer of the atmosphere) represent dangerous elements destroying living tissues including human lungs. Destruction of forests is а result of the combined influence of the acid rains and ozone pollution. Ten thousand lakes in Sweden, Norway, Canada, Great Britain and the United States can not support water types of life as а result of acid precipitation. Fish was extinguished in thousands of these lakes. More than 1/5 of all forests in Europe are sick including half of the forests in West Germany, Switzerland and the Netherlands.

Note:

tissues -ткани

Text 4