The elements of the carbon cycle carbon sources are divided into the 4-carbon in the atmosphere, fresh water and carbon in soil, water, mineral stones closely, and carbon in fossil and living organisms.
The composition of the carbon cycle is divided into four major sources of carbon in the atmosphere, carbon in freshwater and sea water, soil, rocks, minerals and fossils and carbon in carbon in living organisms.
Elements of the carbon cycle is divided into 4 source is the carbon in the atmosphere, carbon in fresh water and sea water, carbon in soil and rock mineral and fossil. And carbon in living organisms.