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课件网) Unit 6 UNIT 6 Earth first To discuss items that contribute to a carbon footprint To work together to discuss effective measures to reduce carbon emissions Do you know what carbon footprint is A carbon footprint is the total amount of greenhouse gases (including carbon dioxide and methane (沼气)) that are generated by our actions. The average carbon footprint for a person in the United States is 16 tons, one of the highest rates in the world. Globally, the average is closer to 4 tons. To have the best chance of avoiding a 2℃ rise in global temperatures, the average global carbon footprint per year needs to drop under 2 tons by 2050. Lowering individual carbon footprints from 16 tons to 2 tons doesn’t happen overnight! By making small changes to our actions, like eating less meat, driving less and drying our clothes outside, we can start making a big difference. Look at the three items that contribute to a carbon footprint. Add any more you can think of. transport meat products We should particularly avoid beef that has been shipped from far away. As crazy as this may sound, the livestock industry is actually accountable for 18% of greenhouse gas emissions. In particular, methane is a big problem when it comes to cattle raising. You don’t have to stop eating beef entirely, but consider saving it for special occasions. When you do eat beef, make sure that it is free-range and grass-fed, as this has both lower emissions and is better for the animal. modern appliances Make sure that you unplug your electronics when you are not using them. plastic packaging taking longer shower disposable chopsticks and lunch box Creat a carbon footprint survey. Think of two questions and possible answers for each topic. Carbon footprint survey 1 How often do you walk, cycle or take public transport to school Never (3) One to three times a week (2) Almost every day (1) 2 How often do you eat beefsteak Often (3) Sometimes (2) Seldom (1) Carbon footprint survey 3 How long does it take you to take a shower More than 15 minutes (3) 15 mimutes (2) Less than 15 minutes (1) Carry out the survey and use the results to come up with ways to reduce carbon footprint. The average score of our group is … The result show that … The biggest problem is … We’re glad to see that … In order to …, we suggest … Report the results of your survey and your ideas to the class. Use the expressions to help you. Look at the three items that contribute to a carbon footprint. Add any more you can think of. contribute vi. to help to make something happen 促成﹐造成 (某事发生) vi.&vt. to give money, help, ideas etc to something that a lot of other people are also involved in 捐献﹐捐助﹐捐赠 e.g. Alcohol contributes to 100,000 deaths a year in the US. The volunteers contribute their own time to the project. contribute … to … 为……捐献/贡献…… contribute to … 促进，造成；向……捐款； 为……作出贡献 contribution n. 捐赠物， ... ...
