Study of pollutants in Air
1)The SPM stands for ___________.

2)What is ground-level Ozone?

3)Substances that cause pollution to the environment are called ______.

4)What is suspended particulate matter?

5)The three main forms of pollution are water pollution, land pollution and ____.

6)Which of the following is not a common source of nitrogen dioxide?

7)Lead can be released into the air through_________.

8)Which of the following is not a major air pollutant?

9)What are secondary pollutants?

10)Suspended particulate matter causes major respiratory disease. How?