The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.
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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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There are 20 feet of blood vessels in each square inch of human skin.
Diagrams showing the multiple energy shells and orbitals of a nitrogen atom
Hybrid orbitals
Electron atomic and molecular orbitals
Electron Shells and Orbitals
Carbon Orbitals
Structure of phosphate ion and hybrid atomic orbitals of phosphate ion