what is an adjective used to describe the situation when there is a lot of water vapor in the air

  1. (a) What is an adjective used to describe the situation when there is a lot of water vapor in the air?
  2. (b) How is water vapor concentration related to air temperature?
  3. (c) How is water vapor concentration related to altitude?
  4. (d) Air that blows off of the Pacific Ocean tends to be quite cold compared to air that blows off the Gulf of Mexico. Based on this observation do you anticipate there to be more water vapor in the air of San Francisco or the air of New Orleans?