Evidence that tensile stresses are actively pulling the lithosphere apart in an ocean ridge system is given by ________
A) the width of the ridge system
B) the lack of thick sediments on the ridge system sea floor
C) the existence of a rift valley in a ridge system
D) the height of the ridge system
C
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How might the establishment of wildlife refuges and international treaties to protect endangered species actually increase their vulnerability and hasten their extinction?
a) By accentuating their scarcity b) By driving up their value c) By making them a “positional good” d) All of the above
The coast extends inland
A) to the foreshore dune. B) to the backshore dune. C) to the trough between the primary and secondary dune. D) to the highest water line that occurs during a storm. E) from the high tide level to the first major landform change.
Which of the following is true about the water table?
A. The water table can slope in opposite directions beneath a hill. B. The shape of the water table does not mimic topography. C. The water table generally is highest in elevation beneath lakes. D. All of these choices are correct. E. None of these choices are correct.
In developing countries, most sewage is
A. handled via communal septic tanks. B. discharged, untreated, into surface waters. C. subjected to both primary and secondary sewage treatment. D. subjected to primary (physical) but not chemical treatment.