Air pollution occurs when wastes dirty the air. People reduce most of the wastes that cause air pollution. Such wastes can be in the form of gases or particles of solid or liquid matter. These substances result chiefly from burning fuel to power motor vehicles and to heat buildings. Industrial processes and the burning of garbage also contribute to air pollution. Besides, there are other polluting substances that exist naturally in the air. They include dust, pollen, soil particles and naturally occurring gases.
The rapid growth of population and industry and the increasing use of automobiles and airplanes have made air pollution a serious problem. The air we breathe has become so filled with pollutants that It can cause health problems. It also harms plants, animals, building materials, and fabrics.
Answer: TRUE or FALSE
- Air pollution happens when wastes dirty the air. _________________
- The natural existence of oxygen in the air contributes to air pollution. _________________
- Vehicles, garbage and industrial processes are natural pollutants. _________________
- The air with pollutants can cause health problem. _________________
Read the passage again and choose the best answer.
- What has made air pollution a serious problem?
A. The rapid growth of population B. The increasing use of automobiles
C. The rapid growth of industry D. All are correct
- What does the word "It" in the last sentence refer to?
A. The polluted air B. The health problem
C. The burning material D. The plant and the animal
