The Carbon Cycle

1
The Carbon Cycle

• Science8
• 9/25/07

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Introduction

• The concentration of carbon in living matter is
  almost 100 times greater than its concentration
  in the Earth.

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Introduction

• Living things extract carbon from their
  non-living environment. For life to continue this
  carbon must be recycled. That is our topic today!

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The Carbon Cycle

• Carbon Exists in the environment as
• 1. Carbon dioxide (CO2) in the atmosphere

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Carbon Cycle

• 2. Carbonate rocks such as
• Limestone and Coral

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Carbon Cycle

• 3. Deposits of Coal and Petroleum

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Carbon Cycle

• 4. Dead organic matter

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Carbon Cycle

• Carbon enters the biotic world through the
  actions of producers (photosynthesis)

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Carbon Cycle

• Carbon returns to the atmosphere and water by
• Respiration(as CO2)
• Burning
• Decay(producesC02if oxygen is present)

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Carbon Cycle

• Decay produces methane(CH4) if oxygen is not
  present

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Carbon Cycle Lets draw it out!!!!!!