In the short-range weather forecasts of this chapter, we assumed that the pressure systems and fronts were ____
a. moving at a constant rate
b. accelerating along a random curve
c. stable and unchanging
d. moving towards zero
e. exactly identical
ANSWER: a
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The drainage characteristic of most deserts in which streams dry up and do not have enough water to
become integrated and reach outside their drainage areas is called ____________________ drainage Fill in the blank(s) with the appropriate word(s).
A population of birds is found on a remote island. Which of the following information is most important in deciding if the birds all belong to a single species?
A) Whether the matings produce viable eggs or offspring of some matings are sterile B) Whether they share many physical characteristics C) Whether they mate with one another D) Whether the males all sing similar songs
How does HIV avoid detection by the immune system?
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Ecological diversity is a measure of the number of
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