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An itch is an annoying, twingey feeling in your skin that you just have to scratch. Some itches are from touching something like poison ivy, some are from mosquito bites, and others just happen for no reason.
Ivory is essentially teeth. Ivory usually refers to elephant's tusks, but any tooth large enough to be carved can be used as ivory. Before plastic was invented, ivory was commonly used for making ornaments, buttons, handles of knives and forks and the most familiar use - piano keys.
Today the trade in ivory is banned in most countries, and plastic or ivory substitutes are used where ivory was once used.
Today the trade in ivory is banned in most countries, and plastic or ivory substitutes are used where ivory was once used.
