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Author Question: From the choices below, identify the attribute below that would make the best primary key. (Read 28 times) |
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.