V. Match these word combinations with their Russian equivalents.

1) to exert harmful influence	a) защита окружающей среды
2) to search for effective ways	b) глобальное потепление
3) global warming	c) с точки зрения экологии
4) environmental protection	d) вести поиск эффективных методов
5) noxious industrial gases	e) выброс пыли и газов в атмосферу
6) from ecological standpoint	f) круговорот веществ в природе
7) natural circulation of matter	g) оказывать вредное воздействие
8) healthy biological habitat	h) вредные промышленные газы
9) the discharge of dust and gas into the atmosphere	i) жизнеспособная биологическая среда обитания

VI. Insert the proper prepositions. Try to memorize some of these expressions.

14: of (4) on (1) in (4) into (1) to (1) by (1) from (1)

1. The life of primitive societies began to disturb the balance … nature only when they started to practice farming … a large scale and keep large herds … grass-eating animals.

2. … the twentieth century, with the advance … science and technology human achievements … conquering nature became greater.

3. The discharge … dust and gas … the atmosphere returns to the Earth … the form of “acid rains”.

4. The planet becomes covered … a layer of noxious industrial gases which keep the heat … getting out.

5. Oil spills, effluent from factories and sewages add … pollution of rivers and seas.

6. Environmental pollution increases the number and variety … diseases, causes the difficulties … diagnosing and defining the reasons of human illnesses.

VII. Paraphrase the sentences using the synonyms from the box instead of the underlined words.

Adjectives	Verb forms	Nouns	Word combinations
toxic		progress
huge	to keep	experts	power stations
particular	is produced	production	global warming
ecological		emission	continuously growing
harmful
thick

1. People’s economic activities began to produce increasingly negative effect on the biosphere.

2. The growth of giant cities accompanied by industrial development on a huge scale began to produce enormous amounts of noxious wastes into the environment.

3. The so-called acid rain results from the release of sulphur oxide and nitrogen oxide into the atmosphere.

4. The output of such synthetic compounds as polymers, resins, plastics, synthetic materials and pesticides has become enormous.

5. The main sources of poisonous emissions are plants generating electricity, industrial boilers, large smelters and automobiles.

6. The dense layer of noxious industrial gases is able to trap the heat of the sun and produce the greenhouse effect.

7. Although the new environmental problems seem very specific, their solution depends on the integrated efforts of specialists in different scientific fields.