Atmospheric Ozone Shields the Earth from the Harmful Effects of Ultraviolet

Q10: Which of the following best matches the

Q11: Photochemical smog is considered a primary pollutant.

Q12: To decrease exposure to second hand smoke,the

Q13: Nitrogen dioxide<br>A)is a natural ingredient of the

Q14: There are six Criteria Pollutants.

Q16: Particulate matter is a dangerous pollutant because

Q17: The hole in the Antarctic ozone layer

Q18: All of the following are a common

Q19: The Clean Air Act<br>A)set national ambient air

Q20: The Clean Air Act of 1970 included