Pipe insulation and vinyl ceiling and floor tiles may be sources of
a. chloroform
b. formaldehyde
c. carbon monoxide
d. asbestos
e. sulfur dioxide
D
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Thousands of cases of lung cancer occur in a two-year period in a city outside of Kentucky, at rates that are double that seen in other cities in the United States. Scientists working in that region assume that
A) there is something unique to the region that causing these unusually high rates. B) the medical reports from the area are incorrect. C) government policies and regulations are most likely the cause of this increase in cancer. D) this is most likely just an unlucky occurrence.
The total fertility rate is the ____.
A. number of children born to a woman during her lifetime B. number of children a couple must bear to replace themselves C. average number of children born to women in their reproductive years D. number of live births per 1,000 people E. births and immigrations into a population
A mineral with CO3 in its formula is a(n) ________.
A. oxide B. halide C. carbonate D. chloride E. sulfide
What proportion of climatologists are in agreement today that global warming is driven by anthropogenic activity?
A. 97 percent B. 75 percent C. 50 percent D. 5 percent