the amount of water vapor in the air by volume usually does not exceed?
the cloud form that is best described as sheets or layers that cover
much or all of the sky is called?
the cloud form that consists of globular cloud masses that take on a
billoway or califlower-like structure is called?
high clouds that form delicate veil like patches or extended wispy
fibers are known as?
thunder and lightning are often associated with ? clouds. 
when using a psychrometer and the two temperatures read nearly the
same, you can conclude that?
the dew point is the temperature at which? 
the mercurial barometer was invented by? 
deserts such as the great basin, gobi and takla makan are examples of?
standard sea level pressure in inches of mercury is?
the change of state from a gas to a liquid is reffered to as? 
freezing nuclei play a role in this process?