Speaking Your Mind (Analytical Exposition)
Good morning, ladies and gentlemen. My name us Sandra Teal. I work for "Save Our Planet", a non-profit organisation which deals with environmental issues. Today I would like tobtalk about air polurion. I will divide this presenration into three parts: firstly, the major causes of air polution, secondly, the effects of air pollution on people and the environment, and thirdly, the efforts to reduce air pollution. Let's begin with my point. The three largest sources of air polution are growing urbanisation, the increasing number of vehicles,and defirestation. A lot of people have moved from rural areas to urban areas for several reasons, such as looking fir better schools, better jobs, facilities and services. Aa a result, the cities have become overcrowded. This has caused an increase in the level of air poluttion. A second cause of air pollution is an increase in the number of vehiclrs. It is getting easier and cheaper to buy vehicles so there are more on the roads increas...