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Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
Did you know?
There are 60,000 miles of blood vessels in every adult human.