the carbon cycle
TRANSCRIPT
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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.
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Photosynthesis:
CO2 + H2O + sunlight yields O2 + C6H12O6
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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.
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Respiration:
C6H12O6 + O2 yields CO2 + H2O + energy
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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.
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Decay & The Carbon Cycle:
• Decomposers release the carbon from dead plant and animal tissues back into the atmosphere.
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Fossil Fuels & The Carbon Cycle:
• Over millions of years fossil fuels may form from the buried remains of plants and animals.
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Fossil Fuels & The Carbon Cycle:
• This carbon reenters the atmosphere during combustion.
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The Oceans & The Carbon Cycle:
• Dissolved carbon dioxide in sea water becomes deposited as calcium carbonate shells.
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The Oceans & The Carbon Cycle:
• Over millions of years, these shells form sedimentary rock.
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• 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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