Sore throat is a symptom, not a disease. In each case, there was a different cause that dictated a different treatment. The scratchy throat probably was a mechanical problem caused by dry, heated winter air and aggravated by my friend's tendency to breathe through her mouth when she sleeps.
Definition. Carbon-storing natural feature (such as a forest or the land mass) that exchanges carbon with other reservoirs. A reservoir from which no outflow of carbon compounds takes place is called carbon sink.
Practically all the carbon in the Earthâs atmosphere exists in the form of carbon dioxide (CO 2) and methane (CH 4). The picture below shows the global carbon budget for 2010. This is a way of tabulating the amount of carbon (in billions of tons) that is released by carbon sources and absorbed by carbon sinks.