Author Question: Air pollution is A) a form of photochemical smog. B) gaseous sulfur and phosphorus. C) a ... (Read 51 times)

waynest · **on:** Jul 14, 2018

Air pollution is

A) a form of photochemical smog.
B) gaseous sulfur and phosphorus.
C) a concentration of a trace substance at a level greater than occurs in average air.
D) a concentration of a trace substance at a level greater than one percent.
E) concentrated in tropical regions.

Question 2

Which of the following is a pollutant at the global scale?

A) carbon dioxide
B) carbon monoxide
C) sulfur oxides
D) particulates
E) acid precipitation