What are the global stores of carbon?
- Atmosphere
- Lithosphere
- Hydrosphere
- Biosphere
- Pedosphere
Explain what carbon sequestration is
A process by which carbon-dioxide is removed from the atmosphere by physical and biological processes e.g. photosynthesis.
Explain the procces of photosynthesis
A chemical change that occurs in the leaves of plants.
Light energy is absorbed by the chlorophyll and it is used to react CO2 with water to make glucose.
Explain the process of burial and compaction
1) And organism dies and layers of sediment build up, burying it
2) THe weight of these layers compact the sediment grains
3) Mineralks deposited in the spaces between the sediment grains gradually cement together
4) Over millions of years, these sediments containing carbon will form hydrocarbons e.g. oil or coal
Explain the process of carbonation
Carbon dioxide dissolved in surface waters reacts with the water to form the weak acid, carbonic acid, which can wear away and break down rocks
Explain the process of decomposition
1) A living organism dies and is decomposed by microorganisms e.g. fungi/bacteria
2) The carbon is released in gaseous forms but also soluble organic compounds ( so carbon can be washed away by surface runoff)
How does carbon move through respiration?
Glucose and oxygen react together in cells to produce carbon dioxide and water
What processes are part of the fast carbon cycle?
- Photosynthesis
- respiration
- Decomposition
- Combustion
What processes form the slow carbon cycle?
- Carbonation
- Sea floor spreading and subduction
- Burial, compaction and lithification
What are the types of seres?
- Lithosere
- Hydrosere
- Halosere
- Psammosere
