carbon cycle

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  • Created by: abic1
  • Created on: 03-05-16 20:30
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  • carbon cycle
    • shows how carbon is naturally recycled
    • both carbon dioxide and methane contain carbon
    • all carbon on earth moves in a big cycle
    • respiration returns carbon to the cycle
    • burning and respiration from decomposers, plants and animals returns carbon dioxide
    • photosynthesis removes carbon dioxide and replaces it with oxygen
    • processes of adding and removing carbon dioxide and oxygen is usually balanced
    • concentration of carbon dioxide has been almost constant for thousands of years
    • humans are upsetting the carbon cycle
    • burning fossil fuels means the concentration of carbon dioxide is increasing
    • use of cars planes and electrical gadgets increases the amount of CO2
    • deforestation means there are less plants  to remove CO2

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