Geographers often use this type of density to compare conditions in different countries
A) physiological
B) scientific
C) arithmetic
D) agricultural
E) hypothetical
Answer: C
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While hiking with two of your classmates, you observe an outcrop of sandstone rich in quartz and feldspar. Friend A says that the sand grains in the rock were eroded from a nearby basaltic volcano
Friend B says that the sandstone was derived from a more distant granite outcrop. Which one of your friends is right and why? What will be an ideal response?
The term periglacial refers to
A) areas permanently frozen ground not covered by glaciers. B) areas that are on top of a glacier. C) regions that are too warm for ground ice. D) process and effects that existed during the last ice age. E) regions which experience winter freezing and summer melt.
Low-pressure regions in the northern hemisphere rotate ________
A) at a 45° angle from the prevailing wind direction B) clockwise C) counterclockwise D) to the left E) to the right
Which of the following is an important biological reaction of thiols?
A) the combination of two thiols and the elimination of H2S to yield a thioether B) the reduction of two thiols to form a disulfide C) the oxidation of two thiols to form a disulfide D) none of the above