17. Answer the following questions on the text.

1) What is industrial ecology rooted in and who developed the concept of industrial ecosystems?

2) What is the origin of the word «ecology»?

3) What is the focus of study of industrial ecology?

4) Industrial ecology is connected with applied and social ecology, isn’t it?

5) What is the primary goal of industrial ecology? What are its key principles?

6) Can human activities be separated from the functioning of the entire system?

7) What is human health dependent on?

8) What is a primary concept of industrial ecology and its challenge?

9) What should be done to improve the overall efficiency of the industrial system?

18. Match the words on the left with their definitions on the right.

1) to sustain	a) existing or happening at the same time
2) to renew	b) to treat raw material, food etc. in order to change it
3) to improve	c) to provide enough of what sb needs in order to live or exist
4) to comprise	d) to become better than before, to make sb/sth better than before
5) efficient	e) to help sth to happen or develop
6) goal	f) the natural world in which people, animals and plants live
7) waste	g) to consist of sb/sth, to have sb/sth as parts or members
8) environment	h) doing sb/sth well or thoroughly with no waste of time, money, energy
9) to promote	i) sth that you hope to achieve
10) vital	j) the way in which two people, groups or countries behave or deal with each other
11) ecology	k) a quality or feature of sb/sth
12) relationship	l) a new and difficult task that tests sb’s ability and skill
13) concurrent	m) necessary or essential for sth to succeed or exist
14) attribute	n) materials that are no longer needed and are thrown away
15) challenge	o) to begin sth again after a pause or interruption
16) to process	p) the relation of plants and living creatures to each other and to their environment

19. Complete the sentences with prepositions: at, in, of, on, to, with.

1) Industrial ecology focuses … integrating industrial systems into natural systems. 2) Ecology is concerned … the relationships between organisms and their past, present and future environments. 3) We can think … ecology as the study of the earth life – support systems. 4) The primary goal of industrial ecology is to promote sustainable development … the global, regional and local levels. 5) Industrial activity is dependent … a steady supply of resources. 6) One should identify inefficient products and processes that result … industrial waste and pollution, as well as determine steps to reduce them. 7) Everyone should contribute … improving the ecological situation in their country.