A parcel of unsaturated air with a temperature of 30°C rises from the surface to an altitude of 1000 metres. Which of the following describes the temperature of the unsaturated air parcel at this altitude?
A. 6°C colder than at the surface
B. 6°C warmer than at the surface
C. 10°C colder than at the surface
D. 10°C warmer than at the surface
Answer: C
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