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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.