Examlex
The half-life of a radioactive isotope is 10,000 years.This isotope and its breakdown product do not normally occur together before molten rock cools and becomes solid.You analyze a volcanic rock and find 25 percent of the original amount of radioactive isotope remains,and 75 percent has decayed to its daughter element.How long ago did the rock solidify?
Acupuncture
A form of traditional Chinese medicine involving the insertion of very thin needles through the skin at strategic points on the body.
Aromatherapy
The use of essential oils and aromatic plant extracts for therapeutic purposes, often involving massage or diffusion into the air.
CAM Therapist
A healthcare provider who practices complementary and alternative medicine, using non-traditional methods to treat patients.
Biofeedback
A technique that trains people to improve their health by controlling certain bodily processes that normally happen involuntarily, such as heart rate, blood pressure, muscle tension, and skin temperature.
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