This <a href="https://en.wikipedia.org/wiki/carbon_cycle" class="extiw" title="w:carbon cycle">carbon cycle</a> diagram shows the storage and annual exchange of carbon between the <a href="https://en.wikipedia.org/wiki/Earth%27s_atmosphere" class="extiw" title="w:Earth's atmosphere">atmosphere</a>, <a href="https://en.wikipedia.org/wiki/hydrosphere" class="extiw" title="w:hydrosphere">hydrosphere</a> and <a href="https://en.wikipedia.org/wiki/geosphere" class="extiw" title="w:geosphere">geosphere</a> in gigatons - or billions of tons - of Carbon (GtC). Burning fossil fuels by people adds about 5.5 GtC of <a href="https://en.wikipedia.org/wiki/carbon" class="extiw" title="w:carbon">carbon</a> per year into the atmosphere.
<div style="display:inline-block;padding:0 3px;background-color:#BDC"><a href="//commons.wikimedia.org/wiki/File:Carbon_cycle-cute_diagram.jpeg" title="File:Carbon cycle-cute diagram.jpeg"><b>Original: </b></a></div> <div style="display:inline-block;padding:3px 0;"><a href="https://en.wikipedia.org/wiki/User:Kevin_Lafamiglia" class="extiw" title="en:User:Kevin Lafamiglia">Kevin Saff</a></div> <div style="display:inline-block;padding:0 3px;background-color:#CCF">Vector: </div> <div style="display:inline-block;"><a href="//commons.wikimedia.org/wiki/User:FischX" title="User:FischX">FischX</a></div>
2008-05-30
Own work based on: <a href="//commons.wikimedia.org/wiki/File:Carbon_cycle-cute_diagram.jpeg" title="File:Carbon cycle-cute diagram.jpeg">Carbon cycle-cute diagram.jpeg</a> (i.e.  <a rel="nofollow" class="external free" href="https://earthobservatory.nasa.gov/features/CarbonCycle">https://earthobservatory.nasa.gov/features/CarbonCycle</a>)