The carbon cycle refers to the flow of carbon through the biosphere, pedosphere, geosphere, and hydrosphere.
There are five main reservoirs of carbon which are all interconnected:
- The atmosphere
- The terrestrial biosphere
- The oceans
- The Earth’s interior
- and sediments (including fossil fuels)
Also, there are many chemical, physical, geological, and biological processes that account for the exchange of carbon.
Furthermore, of all the reservoirs near the surface of the Earth, the oceans are the ones that contain the most carbon.
However, most of this carbon does not flow rapidly to the atmosphere. Hence, the oceans act as carbon sinks.
Unfortunately, these emissions cause global warming.« Back to Glossary Index