Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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Abrasion
Abrasion: An abrasion or "excoriation"
is a wearing away of the upper layer of skin as a result of applied
friction force. In
dentistry an "abrasion" is the wearing away of the tooth
substance.