At a certain elevation, the ________ , the air becomes saturated ...

[AEWBW]

At a certain elevation, the ________ , the air becomes saturated and water-vapor molecules ________.
 
  A) lifting condensation level; condense to mark the base of cloud formation
  B) equilibrium level; condense to mark the base of cloud formation
  C) lifting condensation level; stabilize and mark the upper limit of cloud formation
  D) equilibrium level; stabilize and mark the upper limit of cloud formation

Question 2

Does a rising moist air mass or a descending moist air mass produce precipitation? Why?
 
  What will be an ideal response?

[jennafosdick]

Answer to Question 1

Answer: A

Answer to Question 2

Answer: Both Although precipitation actually falls from a descending moist air mass, the production of rain (or snow) requires both descending and rising air or, downdrafts and updrafts. Recall that most water droplets in clouds are so small that they evaporate before reaching the ground. Updrafts allow the water droplets more time in the cloud where they can grow in size. Once the weight of the drop is greater than the force of the updraft, the drop descends growing larger as it falls through the moist air. As the drops descend, they create a downdraft which, once created, yields precipitation.