The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
Did you know?
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
A closed circulatory system.
closed gentian
Review of Systems ROS
Sample Student Externship Form
Phonetic and Whole-Word Recognition
Crystal structures of SecY complex in “closed” and “open” conformations