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Author Question: The essential element of experiments is an intervention or manipulation by the researcher. ... (Read 47 times) |
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
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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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Green tea is able to stop the scent of garlic or onion from causing bad breath.
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There are more nerve cells in one human brain than there are stars in the Milky Way.