What is the major deterrent to the widespread use of desalination?
A) lack of technology
B) lack of a water source
C) lack of an energy source
D) taste
E) expense
E
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All of the following is true regarding Doppler radar except
A) mountains can shield areas from coverage. B) false echoes can occur from moving objects like birds. C) complete coverage in large urban areas with skyscrapers. D) false echoes can occur from stationary objects like skyscrapers.
Disturbance in an ecosystem can increase biodiversity
Indicate whether the statement is true or false
Where in the United States is the risk of radon exposure lowest?
A) North Dakota B) Alabama C) New Mexico D) Florida E) Michigan
Why are buried oil and gas pipelines vulnerable to damage during a flood?
a. The pipes rise with the rising water level, causing the pipes to break. b. The large amounts of sediment flowing during a flood puts additional pressure on the pipes. c. Channel scour can erode down to the pipeline level, and tumbling rocks can sever the pipe. d. When the levee is overtopped, the dropping water level can expose the pipe, leading to damage. e. If the oil and gas are shut off, the pipe becomes lighter and can float to the bankfull level.