An effervescent beverage is a type of drink that contains carbon dioxide, which causes it to fizz and bubble. The most common example of this type of beverage is SODA, which is a four-letter word. SODA is a sweet, flavored, non-alcoholic beverage that is usually made with carbonated water, sugar, and flavorings. It is a popular drink around the world and is often served with meals or as a refreshing treat.