Period 3 element in 1810, who named it chlorine, from the Greek word χλωρος (chlōros), meaning "green-yellow." Chlorine is a component of various compounds, including table salt. It is the second most abundant halogen and 21st most abundant chemical element in Earth's crust. The great oxidizing potential of chlorine led it to its bleaching and disinfectant uses, as well as uses of an essential reagent in the chemical industry. As a common disinfectant, chlorine compounds are used in swimming pools to keep them clean and sanitary. In the upper atmosphere, chlorine-containing molecules such as chlorofluorocarbons have been implicated in ozone depletion. "Argon" (symbol
Greek cuisine and ancient element of Greek cuisine is olive oil, which is used in most dishes. It is produced from the olive trees prominent throughout the region, and adds to the distinctive taste of Greek food. The olives themselves are also widely eaten. The basic grain in Greece is wheat, though barley is also grown. Important vegetables include tomato, aubergine (eggplant), potato, green beans, okra, green peppers, and onions. Honey in Greece is mainly honey from the nectar of fruit trees and citrus trees: lemon, orange, bigarade (bitter orange) trees, thyme honey, and pine honey. "Mastic" (aromatic, ivory-coloured resin) is grown