Carbonated soft drinks are beverages that contain carbon dioxide gas, which creates bubbles and gives them a fizzy texture. These drinks are typically sweetened and flavored, making them popular choices for refreshment. Common ingredients include water, sugar or artificial sweeteners, and flavorings, with some varieties containing caffeine. These drinks come in various types, including colas, fruit-flavored sodas, and diet versions. Popular brands include Coca-Cola and Pepsi. While enjoyed by many, carbonated soft drinks are often criticized for their high sugar content and potential health effects, such as contributing to obesity and dental problems.