Ecologists and conservation biologists see wilderness areas as ____.
A. recreational opportunities for humans
B. economic benefits to humans
C. areas that must not be used by humans
D. areas set aside for future resource use
E. ecological insurance policies
Answer: E
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A current of 60 hertz is
A. direct current. B. alternating current. C. either of these D. neither of these
Which of the following implies the greatest built-in momentum for population growth?
a. a large population size b. a large number of people age 29 to 44 c. a large number of people under age 34 d. a large number of people under age 15 e. a large number of people over the age of 45
What challenges would natural vegetation face growing in this climate, as opposed to the climate in Montreal or New Orleans?
Sacramento—Station # 6
What will be an ideal response?
The coldest, driest air masses are termed ________
A) maritime Tropical B) continental Tropical C) continental Polar D) Equatorial E) maritime Polar