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Did you know?
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?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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?
People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.