Ex.5. Complete the pasage with the words inside the box: Emissions Footprint Effect Fuels Gases Smog GLOBAL WARMING Global warming is the gradual increase in the Earth's surface temperature as a result of the greenhouse (1) . The explanation for this is that the atmosphere is becoming more and more polluted by greenhouse (2) , and these prevent some of the day's heat from leaving the atmosphere. A lot of these gases are carbon (3) , which are produced when we burn fossil (4) such as coal or oil. Industry and transport are both responsible for this sort of pollution. Some industrial cities are famous for their (5) : thick air pollution that looks like smoke and fog. We all play a part in producing air pollution, especially if we burn coal, oil or wood for heat, if we use vehicles that burn petrol or diesel, or if the electricity we use comes from oil-fired or coal-fired power stations. For this reason, ecologists talk about our carbon (6) or, in other words, the amount by which each individual increases fossil fuel pollution. Helpppppppppppp me!!!!!!. Mik sẽ cho ctlhn và vote 5* ạ