When a simple machine increases a force, it decreases
A. potential energy.
B. distance moved.
C. both of these
D. none of the above
Answer: B
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Parameterizations are used to simulate small-scale atmospheric processes in general circulation models because
A) parameterizations do not require supercomputers. B) parameterizations do not require boundary conditions. C) the models have sparse spatial detail. D) the models have very fine spatial detail.
Which of the following is most resistant to both chemical and physical weathering?
a. a granite b. quartz c. clay minerals d. a limestone
Fact: Ecotones are difficult to draw on large-scale maps. Why is this so?
What will be an ideal response?
Marketable permits can be viewed as a form of improved _______________.
A. command-and-control regulations B. property rights C. refundable tax credits D. flat fee pollution tax