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Author Question: The first Homo sapiens appeared between _________ years ago. a. 4 million and 5 million b. 1 ... (Read 47 times) |
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his
A sidewheeler on the Mississippi. In 1856 Samuel Clemens became an apprentice to a steamboat pilot a