Final answer:
If a large body of air has a low temperature and a low relative humidity, then the air mass is called continental polar (cP). Continental polar air masses form over land areas in polar regions, where they experience very low temperatures.
Step-by-step explanation:
If a large body of air has a low temperature and a low relative humidity, then the air mass is called continental polar (cP).
Continental polar air masses form over land areas in polar regions, where they experience very low temperatures.
They have low relative humidity because the air is cold and cannot hold much moisture.