Sea lions are easily distinguished from seals because they ________
A) cannot rotate their front flippers backward
B) cannot rotate their front flippers forward
C) have external ears
D) have a short neck
E) use their rear flippers for swimming
C
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Japan separated from mainland Asia due to spreading in a back-arc basin, which is now the Sea of Japan
a. True b. False
In the stratosphere, under natural conditions, ozone is formed and broken down by the action of
A) UVB radiation. B) free chlorine atoms. C) sulfur and carbon oxides. D) particulate matter less than 2.5 micrometers in diameter.
The region that contributes water to a given stream system is the stream's:
a. tributary. b. drainage divide. c. drainage basin. d. order. e. discharge.
Which of the following is a common setting for a spring?
A. Sedimentary rocks overlie crystalline rocks along an unconformity. B. The water table intersects the surface. C. A permeable rock overlies a less permeable one. D. All of these choices are correct. E. None of these choices are correct.