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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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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.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.