The carbon cycle

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The carbon cycle

  1. 1. Plants & The Carbon Cycle• Plants take in carbon dioxide and convert it to sugar which can be stored until used for energy.• This process is called photosynthesis.
  2. 2. Photosynthesis:CO2 + H2O + sunlight yields O2 + C6H12O6
  3. 3. Plants & The Carbon Cycle• Plants release carbon dioxide as a waste product when they convert their stored sugar to chemical energy.• This process is called respiration.
  4. 4. Respiration:C6H12O6 + O2 yields CO2 +H2O + energy
  5. 5. Animals & The Carbon Cycle• Animals eat carbon contained in animal and plant tissues and release carbon dioxide as a waste product.• This process is respiration.
  6. 6. Decay & The Carbon Cycle:• Decomposers release the carbon from dead plant and animal tissues back into the atmosphere.
  7. 7. Fossil Fuels & The Carbon Cycle:• Over millions of years fossil fuels may form from the buried remains of plants and animals.
  8. 8. Fossil Fuels & The Carbon Cycle: • This carbon reenters the atmosphere during combustion.
  9. 9. The Oceans & The Carbon Cycle:• Dissolved carbon dioxide in sea water becomes deposited as calcium carbonate shells.
  10. 10. The Oceans & The Carbon Cycle: • Over millions of years, these shells form sedimentary rock.
  11. 11. • Ocean deposits are the biggest sink of carbon on the planet.• The Rock Cycle ultimately releases carbon stored in sedimentary rock.

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