Heating or cooling of large bodies of air requires many days ...

[mia]

Heating or cooling of large bodies of air requires many days because
 
  A) energy transfer is not an instantaneous process.
  B) energy transfer is an instantaneous process.
  C) the process takes place only during nighttime.
  D) the process takes place only during daytime.

Question 2

Air masses
 
  A) all originate from the same place.
  B) require one to three months to form.
  C) vary substantially in important characteristics on the horizontal dimension.
  D) often have large vertical temperature gradients.

[ttt030911]

Answer to Question 1

Answer: A

Answer to Question 2

Answer: D