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Violence flared in 2007 and 2015 in the western Chinese province of Xinjiang between Han Chinese and which ethnic group?

A) Uyghurs B) Pashtuns C) Uzbeks D) Muslims E) Mongols

Which of the following soil types is most likely to be found in mountainous or sandy regions?

A) Mollisols B) Histosols C) Entisols D) Inceptisols

The summer characteristics of a maritime polar air mass is

A) mild and humid. B) cool and dry. C) warm and humid. D) warm and dry. E) very hot and dry.

Which of the following is not used to rate an earthquake on the Richter scale?

(a) The amount of fault slippage that occurred (b) The size of the subsurface or surface area that ruptured (c) The amount of death and destruction that occurred (d) The nature of the ground materials affected by the quake