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Author Question: Babbage's engine was used for years as a mechanical calculator in odometers. (Read 322 times) |
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
This portrait of Thomas Jefferson is considered an accurate likeness, painted when he was thirty-sev
Poverty rates have declined in the last 50 years, and the biggest decline has been for people 65 and ...
To prevent ignition and fuel-injection operation while the engine is being cranked, remove both the ...