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Author Question: Ralph walks 3 m to the left in 2 seconds, then 4 m to the right in 3 seconds. Next, he stops for 3 ... (Read 124 times) |
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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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.