The Carbon and Oxygen Cycle

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Presentation transcript:

The Carbon and Oxygen Cycle page 49

The Carbon Cycle

The Carbon Cycle Carbon can be found in all living organism (organic) the atmosphere (inorganic) the ocean (inorganic) rocks (inorganic) fossil fuels (coal, petroleum, natural gas )(inorganic)

Inorganic Carbon is found in the Atmosphere smallest storage of inorganic carbon. only 0.3% of the gases we breath in contains carbon dioxide Ocean – carbon dioxide is dissolved in the water carbon is also found as carbonate (CaCO3) in shells and hard structures

Inorganic Carbon is found in the c) Rock - on the ocean floor (limestone) - on the earths surface as sedimentary rock - this trapped carbon is only released back into the cycle through geological conditions (volcanic activities, earthquakes)

Organic Carbon is found in; a) Living Organisms in DNA, carbohydrate, proteins, and fat this carbon is released back into the cycle through decomposition Bogs

Organic Carbon is found in Bogs (very little decomposition) the carbon in bogs (as living organic matter) gets trapped under sediments pressure and heat turns these sediments into coal Ocean floor – conditions similar to bogs, organic matter is not decomposed and will turn into oil.

The Oxygen Cycle Oxygen is found in the atmosphere (O2, O3, CO2), and in living organisms (glucose, proteins, DNA, or important molecules)

The Oxygen Cycle Oxygen moves from the earth into living organism through photosynthesis Oxygen moves from living organism to the Earth through cellular respiration Photosynthesis 6 CO2 + 6 H2O  C6H1206 + 6 O2 Cellular Respiration C6H1206 + 6O2  6 CO2 + 6 H2O

The Oxygen Cycle Oxygen is also important in combustion and decomposition