Asthma cases in Americans are about 75% higher today than they were in 1980.
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The horizontal fraction bar was introduced by the Arabs.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Evaluation measures to determine the success of goals
Risk Factors for Cancer
Risk factors for suicide.
How to determine if a table of values represents a function
Factors Affecting the Affinity of Hb for O2
How can you determine if the glucose-aversion trait in cockroach?