Which of the following is an example of an epidemiological study?
A. The cancer rate of people living downwind to a nuclear power plant was compared with those living upwind.
B. Rats were given high concentrations of arsenic for six months and the control group was given a placebo.
C. A study of drug overdoses in Los Angeles revealed that cocaine cut with animal deworming compound is dangerous.
D. A man in Phoenix ate a banana and died riding his bicycle on a crowded street in the middle of the summer.
Answer: A
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The barrier between Israel and the West Bank
A) has been ruled as illegal by both Israeli and international courts. B) is welcomed by both sides. C) represents the natural landscape feature of the Jordan River. D) follows the previous border between Israel and Jordan. E) is more than one thousand miles long.
What kinds of information about clouds could you hope to determine using infrared and visible satellite photographs?
What will be an ideal response?
When two plates move together, lithosphere is ________
A) not changed B) created C) destroyed D) melted
The Laramide Orogeny at the end of the Mesozoic produced ________
A) the Ural Mountains in Russia B) the Appalachian Mountains in the eastern U.S. C) the Alps in Europe D) the Rocky Mountains in the western U.S. E) the Himalayan Mountains in Asia