Suppose saturated polar air has an air temperature and dew point of -10o C, and unsaturated desert air has an air temperature of 35o C and a dew point of 10o C. The desert air contains ______ water vapour and has a ________ relative humidity than the polar air.

• A. Less, higher
• B. More, higher
• C. Less, lower
• D. More, lower

Answer: (D)