第1个回答 2012-05-20
Well, as you are probably aware, air pollution takes many different forms and arises from a variety of sources. In terms of overall range and extents of impacts, however, it is my opinion that burning of fossil fuels (coal, gasoline, etc..) is the single largest source of air pollutants. These fuels cause smog, acid rain, soot and particulates increases, greenhouse gas emissions, and dispersal of some heavy metal contaminants.
Fossil fuels are widely used for heating, transportaion, electricity generation, manufacturing and other industries. Thus, they are used pervasively in our society and their use is difficult (but not impossible) to curtail. Also, various measures can be taken to help make fossil fuel buring both cleaner and more efficiently but this comes at some monetary cost. Until we find cleaner alternatives to the present fossil fuels buring methods, most air pollutants plaguing the world today will continue to be a problem in the future
第2个回答 2012-05-20
哪一个最能导致空气污染？
There are many reasons for the air pollution. First the number of private cars is becoming larger and larger, which leads to lots of waste gas being discharged into the air. Second,the production from some factories are giving off terrible smell ,which is bad to our health. Finally some waste gas from the chimneys of the house are adding to the air pollution so I think tough measures should be taken to reduce these kinds of air pollution.本回答被提问者采纳