Q861
Much of Tibet lies at altitudes over 18,000 feet where the pressure is about 500 mb. At such altitudes, the Tibetans are above roughly:
A.
10% of the air molecules in the atmosphere
B.
25% of the air molecules in the atmosphere
C.
50% of the air molecules in the atmosphere
AnswerD.
75% of the air molecules in the atmosphere
Answer: Option C
Solution
Answer: Option C
Solution:
Much of Tibet lies at altitudes over 18,000 feet where the pressure is about 500 mb. At such altitudes, the Tibetans are above roughly 50% of the air molecules in the atmosphere.