|
|
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.