Carbon cycle. The roots of the matter.
Chapin
F S
FS
Ruess
R W
RW
D001272:Atmosphere; D002244:Carbon / Q000378:metabolism*; D017753:Ecosystem; D005658:Fungi / Q000378:metabolism*; D010788:Photosynthesis; D018517:Plant Roots / Q000378:metabolism* / Q000382:microbiology*; D012987:Soil; D012988:Soil Microbiology; D013559:Symbiosis; D014197:Trees
D012987:Soil; D002244:Carbon