Which of the following environmental lapse rates represents the most unstable atmosphere in a layer of unsaturated air?
A. 6°C per 1000 m
B. 9°C per 1000 m
C. 11°C per 1000 m
D. 3°C per 1000 m
Answer: C
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A. East Africa B. Southern Africa C. Central Africa D. West Africa
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