Four processes involved in the carbon cycle occurring in the biosphere are indicated using arrows. They are:
  1. Biological: It is indicated by blue arrows
  2. Human: It is indicated by yellow arrows.
  3. Geological: It is indicated by green arrows.
  4. Physical or chemical: It is indicated by red arrows
The components involved in the process include:
  1. Atmospheric Carbon (Carbon dioxide gas)
  2. Fossil Fuels (coal, oil, and natural gas)
  3. Forests
  4. Carbon dioxide dissolved in water bodies
  5. Carbon in marine sediments
  6. Carbonate rocks
The text box indicating the forest fire and human activity reads ‘Burning of forests and fossil fuels releases carbon dioxide.’ The text box indicating the biological activity reads ‘carbon dioxide is taken up by producers during photosynthesis and released by cellular respiration. Consumers eat producers and release carbon dioxide through cellular respiration.’ The text box at the bottom indicating geological process reads ‘Geological activity turns marine sediments into rock.’ The text box on the top indicating the geological process reads ‘Geological activity releases carbon dioxide.’ The text box at the bottom indicating the physical or chemical activity reads ‘carbon dioxide dissolves in oceans and returns to the atmosphere.’ The text box on the top indicating the physical and chemical activity reads ‘carbon dioxide dissolves in rainwater.’ The text box indicating both biological and geological activity reads ‘Decomposition, pressure, and heat turn organic matter to fossil fuel over millions of years.’