1.  Comprehending on page 27  Exercise 1  1. Sophie Armstrong. Earth Care  2. Dr Janice Foster, Charless Keeling, George Hambly  3. there are some very different attitudes among scientists towards this issue. Some think the effects will be terrible, while some others believe that we should not worry about it.  4. the first graph shows the temperature increases of one degree Hahrenheit between 1860 to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1997  5. Global warming/ the warming of the earth  Exercise 2  F F T F T T T T F F

2.  Learning about language on page 28  Exercise 1  1. data, keep on 2. quantities, run of  3. build up, catastrophe 4. come about, risk  5. climate 6. consequence 7. compared to  8. phenomenon 9. graph 10. per  Exercise 2  Temperature, 1860, 2000, increased/ rose/ went up, coolest/lowest, 1910, increase/rise, warmer, carbon dioxide, 1957, 1997, increased/rose/went up, per

3.  Discovering useful structures on page 29  Exercise1  1. It was a scientist called Charles keeling who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.  2. It is the burning of more and more fossil fuels that is resulting in this increase in carbon dioxide.  Exercise 2  1. It is greenhouse gases that have warmed the earth by trapping heat energy in the atmosphere.  2. It is the greenhouse effect that gives the earth’s surface the average temperature of 15 oC  3. It is the fossil fuels that much of the energy used to light and heat our homes comes from.  4. It is the United states of America that is the biggest producer of greenhouse gases.  5. It is for centuries that carbon dioxide stays in the atmosphere while other greenhouse gases stay in the atmosphere only for a day of less.

4.  6. It is their very existence that low-lying centuries feel is in danger from rising sea levels.  7. It is the human activities that many scientists believe have caused the earth’s temperature to rise.  8. It is future climate changes and their effects o our environment that scientists want to find out about.  9. It is by several meters that the level of the sea could rise in the years ahead because of global warming.  10.It is outer space that might provide us with new energy sources in the future.

5.  Using language on page 30  Earth care’s suggestions:  Turn electrical appliances off when nor using them.  Don’t turn up the heat, put on more clothes.  Walk or ride a bike, don’t drive  Recycle  Buy things made from recycled materials  Buy products that use less energy  Plant trees  Talk with family and friends about global warming

6.  Listening and discussing on page 31  Exercise 1  Professor Chen does not agree with 3: we can replace fossil fuels with renewable sources of energy.  Exercise 2  Agree:  Exactly that’s true that’s right that’s correct  I agree I’m afraid not.  Disagree:  I’m afraid I disagree with you  I don’t think so no way I don’t agree

7. workbook  Listening on page 62  Exercise 1  1. An organization run by kids who are concerned about the environment.  2. 1996  3. Kids from all over Australia and from other countries; they decide which projects to work on in the following year.  4. It teaches them about greenhouse gases and how they can cut down greenhouse gases by not traveling to school by car so often.

8.  5. You’d decide on an environmental problem that you’d work out a plan of action that has all the steps needed to solve the problem.  6. Planting trees at school or in farms; looking after a piece of land; developing activities that reduce, reuse and recycle waste.  7. On the internet / on their website  8. Because she believes that if we don’t care for the environment, we and future children won’t be able to survive.

9. Exercise 2 Name of the organization Millennium kids Its purposeIt’s for kids who are concerned about the environment Time when it was set up 1996 Examples of activities A yearly conference; school performance eg a play called “ the horse who saved the would”; environmental projects Examples of projects Planting trees at school or on farms; looking after a piece of land; developing activities that reduce, reuse and recycle waste, such as plastic bags Other information They have a website.

10.  using words and expressions on page 63  Exercise 1  1. pollution 2. statement 3. agreement 4. reduction 5. catastrophic 6. electrical 7. existence 8. comparable 9. risky 10. seriousness 11. climatic 12. doubtful  Exercise 2  1. It would make a big difference to out environment if we planted more trees around the school.  2. the research resulted in a better understanding of changes in the climate.  3. I think our conference was very successful on the whole.  4. There is a wide range of energy sources: coal, oil, natural gas, water power, nuclear power and so on.

11.  5. I think people turn up the heat in their houses too high and just waste energy.  6. Even if there is a steady decrease in the use of oil fuels, the earth will still keep warming up.  7. The headmaster has stated that he is going to put up with littering in the school.  8. Since your bicycle is broken you can use mine, so long as you take care of it.  9. The consumption of the energy recourses in the USA is almost 6 times as much as the average consumption of the whole world.  10. I’ve glanced at your plan so now I want you to finish your final report.

12.  Listening task on page 65  Exercise 1 YearEventFacts about the event 1987 Ian Kiernan competed in an around-the-world yacht race He was shocked at the pollution in the ocean 1989 Clean-up day for Sydney Harbour 40,000 volunteer; collected old car bodies, plastics, glass bottles, cigarette butts 1990 The first Clear Up Australia Day 300,000 volunteers 2001 Clear Up Australia Day Most common kinds of rubbish: cigarettes butts, glass bottles and plastics bags 1993 The first Clear Up the World 30 million volunteers in 80 countries 2001 Clear Up the World 40 million volunteers in 128 countries; cleaned streets, beaches, river banks and parks

13.  Exercise 2  Answer will very. Students are encouraged to talk about their own school and community