Relative humidity indicates the:
A) chance of cloud formation.
B) nearness to saturation for the air.
C) probability of precipitation.
D) actual amount of water in the air.
E) chance for evaporation of water.
Question 2
Indoor air is likely to be contaminated by all of the following except ________.
A) particulate matter
B) mercury
C) microorganisms
D) radon
E) volatile organic compounds
