The Carbon Cycle

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The Carbon Cycle
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Carbon

• Important facts about carbon
• CARBON is the basis of life on earth
• 99.9 of all organisms are believed to be carbon
  based
• Carbon in continuously cycled and reused because
  it is fixed
• Fixed finite supply of carbon

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The Carbon Cycle

• The carbon cycle is the ultimate form of
  recycling
• Plants use photosynthesis for their carbon cycle
• Animals use metabolism for their cycle

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PhotosynthesisCarbon Cycle

• Enables plants to take carbon dioxide out of the
  atmosphere and combine it with water.
• Using the energy of the sun, plants make sugars
  and oxygen molecules.
• 6CO2 6H2O ( light energy) C6H12O6 6O2
• carbon water
  glucose (sugar) oxygen

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MetabolismCarbon Cycle

• Animals cannot produce their own food and energy,
  they must obtain it from eating other plants and
  animals.
• Sugars and starches made from photosynthesis that
  they eat are broken down by metabolism
• Results
• Energy for animal
• Water
• Carbon dioxide molecules
• Carbon dioxide that animals exhale is released
  back into the atmosphere for plants to use again.

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