carbon cycle
- 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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