An international survey identified ________ as the most influential environmental book.
A. A Sand County Almanac, by Aldo Leopold
B. Men and Nature, by George Perkins Marsh
C. The Population Bomb, by Paul Ehrlich
D. Walden, by Henry David Thoreau
Answer: A
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Freezing rain:
A) requires a layer of cold air near the surface. B) is not associated with temperature inversions. C) leaves the bottom of clouds as supercooled droplets. D) is commonly associated with thunderstorms.
Describe the structure and properties of the typical warm front and explain what usually happens when it meets a cold front
What will be an ideal response?
What do the simplest vertebrates lack?
A) Jaws B) Notochord C) Central nervous system D) None of these choices
________ refers to sand grain movement in a series of short leaps or bounces off the bottom.
A. Hopping B. Saltation C. Vaulting D. Floating E. Jumping