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?