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Author Question: Which of the following surveys has been conducted since 1971, surveys households, and is designed to ... (Read 63 times) |
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Thyroid conditions may make getting pregnant impossible.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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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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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.