According to water resource experts, what are the two main causes of water waste?
a. lack of government subsidies for improving the efficiency of water use and ignorance about the amount of water being wasted
b. low cost of water to users and lack of government subsidies for improving the efficiency of water use
c. lack of desire to conserve water and knowledge that there is actually enough water on the planet to supply all uses
d. lack of information about efficient irrigation systems and lack of regulation of water use
e. There is a single main cause of water waste and it is the lack of regulation of water use.
B
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Suburbanization
A) has reduced urban area but increased rural area. B) has expanded urban territory but reduced population density. C) has increased population density in city centers. D) has resulted in the wholesale abandonment of urban environments. E) has only occurred in North America.
Which of the following was the cause of the debris flow in Oso, Washington, in March 2014?
A) Volcanic eruptions generated a lahar. B) A stream at the base of a slope eroded the toe of the slope away. C) Heavy rains saturated the surface materials on the slope. D) The slope was oversteepened during construction.
A condition where the central and eastern tropical Pacific Ocean turns cooler than normal is called?
a. ?El Niño. b. ?La Niña. c. ?the Southern Oscillation. d. ?the Ekman Spiral. e. upwelling.?
If a nucleus of 
Th absorbs a neutron and the resulting nucleus undergoes two successive beta decays (emitting electrons), what nucleus results?
A. thorium-233 B. plutonium-232 C. uranium-233 D. americium-232