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.
Carbon is stored in four main reservoirs. 1  In the atmosphere as CO2 gas. 2  In the hydrosphere (oceans and surface waters) as dissolved CO2. 3  In the biosphere where it occurs as organic compounds in organisms. 4  In the Earth's lithosphere as carbonate minerals, graphite, coal, petroleum.