What is 'Currency'. Currency is a generally accepted form of money, including coins and paper notes, which is issued by a government and circulated within an economy. Used as a medium of exchange for goods and services, currency is the basis for trade. Generally speaking, each country has its own currency.
- Use alternatives to these toxic materials -. Mothballs are made of white crystals of two very dangerous chemicals, para-dichlorobenzene (1,4-dichlorobenzene) and/or naphthalene. Both chemicals are solid at room temperature but produce very strong, toxic vapors. Mothballs are sold as flakes or pressed into cakes.
He tells the history of four kinds of moths, including the brown one (Hofmannophila) which, given a chance, will gladly eat the corks on the bottles in your wine cellar. That's why wine bottles have a foil cap, which is the equivalent of moth balls. The wine would actually age better if the cork were left bare.