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Author Question: Astronaut Jill leaves Earth in a spaceship and is now traveling at a speed of 0.280c relative to an ... (Read 88 times) |
The familiar sounds of your heart are made by the heart's valves as they open and close.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.