Graphs and Tables 5

I can hardly breathe

Sources of air pollution in Bangkok

Study the above graph showing sources of air pollution. Fill in the blanks with the words, phrases or numbers provided in the lists.

As far as the air pollution problem is concerned, Bangkok does not seem much different from Mexico and Switzerland as its largest proportion of air pollution is caused by . From the above chart, they alone account for per cent, whereas industry ranks , another 17 per cent. Third come , which another 14 per cent. The two other polluting agents are and , which 6 and 3 percent of the air pollution in this city .