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Author Question: Elements that belong to the same period have the same number of valence electrons. Indicate ... (Read 128 times) |
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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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The horizontal fraction bar was introduced by the Arabs.
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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.