Which of these is LEAST important in determining the level of air pollution from a particular source?
A) relative humidity at ground level
B) stability of the air layer
C) prevailing wind speed and direction
D) height of stack used

Question

Quizplus · Accepted Answer

Relative humidity at ground level may have some effect on air pollution, but it is considered the least important factor in determining the level of air pollution from a particular source. The stability of the air layer, prevailing wind speed and direction, and the height of the stack used all have a greater impact on air pollution levels.

Which of These Is LEAST Important in Determining the Level