|
|
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Did you know?
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Did you know?
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.