Suppose saturated polar air has an air temperature and dew point of -10ºC, and unsaturated desert air has an air temperature of 35ºC and a dew point of 10ºC. Which of the following describes the water vapour and relative humidity of desert air compared to polar air?
A. Desert air has less water vapour and lower relative humidity than polar air.
B. Desert air has less water vapour and higher relative humidity than polar air.
C. Desert air has more water vapour and lower relative humidity than polar air.
D. Desert air has more water vapour and higher relative humidity than polar air.
Answer: C
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