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Author Question: The Pyramid of the Sun was built by the people of Teotihuacn in the fifth century C.E. a. True ... (Read 61 times) |
There are approximately 3 million unintended pregnancies in the United States each year.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.