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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
Did you know?
Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.