Why might disposing of a lead-acid battery, nickel-cadmium battery or mercury battery in a landfill be a bad thing?
A) Cadmium, mercury, and lead are all toxic metals and could leak out of the landfill.
B) Cadmium, mercury, and lead are all very reactive and generate highly unstable compounds.
C) Cadmium, mercury, and lead are all radioactive and release radiation.
D) all of the above
E) none of the above
A
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The main cause of the Rapid City flood of 1972 was
A. failure of a dam because of a large landslide into the reservoir. B. intense rainfall from a thunderstorm that resulted in a flash flood. C. poor design and poor construction of a large concrete dam. D. rapid melting of glaciers in the Black Hills because of global warming. E. All of these choices are correct.
Which organism is affected the most by the accumulation of waste?
A. bacteria B. humans C. small rodents D. plants
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Indicate whether the statement is true or false
Primary oil recovery
A. refers to extraction of oil principally under its own pressure. B. is no longer practiced because it is inefficient. C. typically leads to extraction of about 90 percent of the oil in the reservoir. D. All of the choices are correct.