Vertisols, aridisols, oxisols, and ultisols all have in common that they
A. form in warm climates.
B. lack a well-developed A horizon.
C. are deeply weathered soils.
D. resist formation into polypedons.
Answer: A
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Your feet feel warmer on a rug than on a tile floor because the rug
A) is usually warmer than tile. B) is a better insulator than tile. C) for the same mass has more thermal energy than tile. D) all of the above E) none of the above
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Most countries in Southwest Asia and North Africa had achieved independence by which decade?
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