Rupture begins at the ________ and then spreads rapidly along the fault plane.
A. focus
B. point of contact
C. plate boundary
D. shear plane
E. epicenter
Answer: A
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Each number on this figure refers to a location depicting groundwater in a subsurface material that is consistent in character across the entire figure. Of these locations, which two sites are on the opposite side of a groundwater divide?
A) Between 1 and 2
B) Between 2 and 3
C) Between 3 and 4
D) Between 4 and 5
E) None of these are correct.
Household wastes that properly can be flushed down the drain or toilet include all of the following except
A. herbicides. B. window cleaner. C. disinfectants. D. ammonia.
The price and availability of chemical fertilizers is strongly influenced by
A. the price of oil on the world market. B. the price a farmer receives for his crop. C. the amount of rain received in any given growing season. D. None of these are correct.
Why has total U.S. cropland been decreasing? What will be an ideal response?