Examples of carcinogens include
a. ultraviolet radiation
b. certain chemicals in tobacco smoke
c. Arsenic
d. A and C are correct
e. All of the above are correct
E
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Edge cities, "edgeless cities," micropolitan centers, criss-crossing freeways, and interspersed residences with office employment and high-end retailing in polycentric networks characterize
A) megapolitan regions. B) virtual cities. C) Modernist urban planning. D) the reaction to gentrification
Examples of point sources of water pollution include
A. a sewage outfall from a city sewer plant. B. runoff from parking lots. C. runoff from farm fields.
Species with a steady death rate throughout life are characterized by
A) Type I survivorship. B) Type II survivorship. C) Type III survivorship. D) none of the above
Debris flows are different from mudflows in that they ____
A)move faster B)are confined to pre-existing channels C)contain more water D)are less damaging E)are composed of larger particles