What is a "Carbon Sink"?
A Carbon Sink – like plants, the ocean, and soil, are reservoirs that absorb more carbon dioxide (CO2) from the atmosphere than they release. It refers to a process called "carbon sequestration": natural or artificial deposits created where carbon would be stored for various periods depending on the medium. In contrast, a carbon source would be anything releasing more carbon into the atmosphere than it absorbs – burning fossil fuels or volcanic eruptions, for example.
