The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
Structure of a typical animal cell
This fisherwoman from Kerry, one of the poorest counties in Ireland, may have been one of the many t
Parts of a typical spark plug.
Typical secondary ignition pattern. Note the lack of firing lines on superimposed pattern.
Typical laboratory chemical hood.
Early growth of corn (Zea mays), a typical monocot.