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Author Question: Potassium-40 decays into daughter isotopes with a half-life of _____. A) 1.25 billion years B) ... (Read 109 times) |
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.
More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.
The average office desk has 400 times more bacteria on it than a toilet.