Floods and droughts are
a. strictly natural disasters
b. influenced by human activities
c. decreased by increases in human population
d. independent of human activity
e. always predictable and cyclic
B
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Today urbanization is occurring in many places without economic development, especially in
A) poor countries. B) rich countries. C) European countries. D) the United States.
Which of the following does not tend to increase biodiversity in an ecosystem?
A) evolution B) diverse habitats C) extreme disturbance D) relatively constant environmental factors
Which of the following locations shows the best development of a Rossby wave ridge?
A. A B. B C. C D. D
Clay is both ________ and ________ in terms of groundwater
A) porous, permeable B) porous, non-permeable C) non-porous, non-permeable D) non-porous, permeable E) lacking interstices, lacking openings