Physical disintegration of rock into smaller pieces is called
A. transportation
B. mechanical weathering
C. chemical weathering
D. deposition
Answer: B
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The poorest regions of China are generally:
A) in the northeast B) in the east C) in the south and west D) around cities on the eastern coast
The yeast in bread dough feeds on sugar to produce carbon dioxide. Why does the dough rise faster in a warmer area?
A) There is a greater number of effective collisions among reacting molecules. B) Atmospheric pressure decreases with increasing temperature. C) The yeast tends to "wake up" with warmer temperatures, which is why baker's yeast is best stored in the refrigerator. D) The rate of evaporation increases with increasing temperature.
Which of the following is not a reason why the World Heritage List has been criticized?
A) It reflects a Eurocentric basis. B) Tourists often expect that World Heritage sites will be accessible to them, regardless of competing uses. C) It raises awareness of the global cultural resources and sometimes triggers the development of new tourist sites. D) World Heritage sites can be very expensive to maintain. E) Some speculate whether there really can be such a thing as global heritage.
The vertical motions that occur when the air is unstable are termed:
A) cyclonic. B) geostrophic. C) subsidence. D) convergence. E) convection.