APES 1.4 Carbon Cycle

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9 Terms

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Carbon: Importance

  1. Photosynthesis in Producers

  2. Respiration to producers, consumers, decomposers

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Carbon: Reservoirs

Forms as CO2 (Carbon Dioxide)

  1. Largest: Geosphere (especially Mrine Sediment)

  2. Short-Term: Cycles b/w ATM & Ground

  3. C that’s not changed thru metabolism:

    • Terrestrial: stored in producers/consumers

    • Aquatic: Stored in producers/consumers at top of water

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List Cycle Steps in Order

  1. Photosynthesis

  2. Cellular Respiration

  3. Decomposition

  4. Lithification/Sedimentation

  5. Combustion

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Photosynthesis

Converts CO2 into Glucose

  • Biotic Process

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Cellular Respiration

Cells break down nutrients, glucose, O2 into ATP (usable NRG)

  • Biotic Process

  • Metabolism: Breaks down glucose w/ O2 → returns CO2 to ATM

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Decomposition

Returns CO2 to ATM + Breaks down bodies into C into soil

  • Biotic Process

  • Duration Depends

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Lithification/Sedimentation

Sediments move deeper into ocean, becoming lithified into stone

  • Longer sequestration

  • Reservoir

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Combustion

Extract fossilized C → the combustion releases CO2 into ATM, disrupting cycle

  • Abiotic Process

  • Quick return to cycling

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Ways Humans Intervene with Cycle

Increase CO2 into ATM = Increase natural greenhouse effect

  • Deforestation

  • Burn Fossil Fuels and Wood