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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This subregion of Africa South of the Sahara is known for its coffee and tea exports
A. East Africa B. Southern Africa C. Central Africa D. West Africa
Typically, water vapor occupies about what percentage of the air's volume near Earth's surface?
a. ?about 78 percent b. ?about 21 percent c. ?close to 10 percent d. ?less than 4 percent e. ?less than 1 percent
The Opium Wars pitted the Chinese against which nation?
A) Russia B) Korea C) Great Britain D) Japan E) United States
A student discussing bond polarity and molecular polarity in alcohols made the following statements: (i) In methanol, CH3OH the H-O bond is more polar than the C-O bond. (ii) Ethanol, CH3CH2OH, the alcohol of alcoholic beverages, has at least one polar bond, a net dipole, and is a polar molecule. Which of the above statements is(are) true?
A) only statement (i) B) only statement (ii) C) both statement (i) and statement (ii) D) neither statement (i) nor statement (ii)