----- Nội dung dịch tự động từ ảnh ----- Read following passage and circle the correct answer. CARBON FOOTPRINTS Everybody has a carbon footprint - it's the(23)_ of carbon dioxide we produce with any action or activity. As carbon dioxide contributes to 'greenhouse gases', our carbon footprints have a direct impact( 24)_ the environment. You can estimate your carbon footprint on any number of popular websites: if it's (25)_ then you're probably leading a relatively green lifestyle. But what happens if it's big? Well, the answer is that you can(26) it. This modern answer to the problem is for people to contribute to balancing the negative effects of their actions by using (27) fuels, recycling, reforestation and a number of other activities which are said to contribute to a lowering of carbon dioxide. d. period d. in d. fine d. balance d. green 23. a. number 24. a. for 25. a. small 26. a. replace 27. a. fossil b. quality b. to b. large b. reuse b. leaded c. amount c. on c. free c. increase c. smoky