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Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
There are more sensory neurons in the tongue than in any other part of the body.
Did you know?
Everyone has one nostril that is larger than the other.
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."