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Author Question: From the choices below, identify the attribute below that would make the best primary key. (Read 25 times) |
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.