Briefly describe the three ways air can become saturated with ...

[Engineer]

Briefly describe the three ways air can become saturated with water vapor.
 
  What will be an ideal response?

Question 2

Sometimes fog will form over the pavement after a summer rain shower. What type of fog is this?
 
  What will be an ideal response?

[patma1981]

Answer to Question 1

Answer: Air can become saturated by any one of three general processes: adding water vapor to the air; mixing cold air with warm, moist air; and lowering the temperature to the dew point.

Answer to Question 2

Answer: This is an example of steam fog. The water from the shower cools the pavement to the point of saturation. It should also be pointed out that the additional moisture provided by the shower promotes saturation.