Nitrogen cycle carbon cycle Oxygen cycle information internet
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Carbon Cycle

Carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere and the atmosphere of the Earth through a biogeochemical cycle called Carbon Cycle.
How do you differentiate between organic and inorganic matter? Well, this is decided by the presence of carbon in the matter. Essentially all organic matter contains carbon. Carbon cycle is the cyclic pattern that carbon follows on earth. By following the carbon cycle we can also study the flow of energy as the energy needed for life is stored between carbon molecules in organic matter as proteins and fats.
Carbon is also present in air as CO2, and in oceans as carbonates and bicarbonates, that also dissolve to generate CO2. Carbon is also present in soil (lithosphere) as fossil fuels. The primary source of removal of carbon from the atmosphere is when CO2 is absorbed by plants during photosynthesis. The restock is done through respiration, combustion of fossil fuels, decomposition and chemical reactions that give out CO2.
Oxygen Cycle

After carbon, oxygen is one of the most abundant elements on earth. About 21% of our air is composed of oxygen. It is also an atom in the molecule of water (H2O). Oxide compounds, such as CO2 also contain oxygen.
As we are aware oxygen is absolutely essential for all living organisms to survive. It is the main component in respiration. It is also the element that allows and assists combustion of any kind. Through photosynthesis, the replenishment of oxygen in the atmosphere is done, where oxygen is one of the by-products. In fact, photosynthesis and respiration are interdependent mechanisms that perform a unique and amazing balancing.
Nitrogen Cycle

Nitrogen is available in abundance in our atmosphere (78%), however, this nitrogen is useless to animals and plants until it is converted to ammonia and other nitrogen compounds. This conversion process is called Nitrogen Fixation. And through a process is called denitrification, once these plants and animals are dead, this ammonia is broken down by bacteria and fungi and returned to the atmosphere as Nitrogen.
Phosphorous Cycle
phosphorous moves in a cycle in our atmosphere via rocks, sediment, soil, water and living organisms. Over a long period of time weathering of rocks leads to phosphate ions and minerals being released into the soil and water. This is absorbed by living organisms who need phosphorous to build nucleic acids such as DNA. Then when these living organisms die, phosphates are released back into the soil.
There are still various other biogeochemical cycles such as water, rock, sulphur etc. The importance of these cycles is that they essentially support all life on the planet because without these cycles living organism would not get all the elements they need to survive.

Carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere and the atmosphere of the Earth through a biogeochemical cycle called Carbon Cycle.
How do you differentiate between organic and inorganic matter? Well, this is decided by the presence of carbon in the matter. Essentially all organic matter contains carbon. Carbon cycle is the cyclic pattern that carbon follows on earth. By following the carbon cycle we can also study the flow of energy as the energy needed for life is stored between carbon molecules in organic matter as proteins and fats.
Carbon is also present in air as CO2, and in oceans as carbonates and bicarbonates, that also dissolve to generate CO2. Carbon is also present in soil (lithosphere) as fossil fuels. The primary source of removal of carbon from the atmosphere is when CO2 is absorbed by plants during photosynthesis. The restock is done through respiration, combustion of fossil fuels, decomposition and chemical reactions that give out CO2.
Oxygen Cycle

After carbon, oxygen is one of the most abundant elements on earth. About 21% of our air is composed of oxygen. It is also an atom in the molecule of water (H2O). Oxide compounds, such as CO2 also contain oxygen.
As we are aware oxygen is absolutely essential for all living organisms to survive. It is the main component in respiration. It is also the element that allows and assists combustion of any kind. Through photosynthesis, the replenishment of oxygen in the atmosphere is done, where oxygen is one of the by-products. In fact, photosynthesis and respiration are interdependent mechanisms that perform a unique and amazing balancing.
Nitrogen Cycle

Nitrogen is available in abundance in our atmosphere (78%), however, this nitrogen is useless to animals and plants until it is converted to ammonia and other nitrogen compounds. This conversion process is called Nitrogen Fixation. And through a process is called denitrification, once these plants and animals are dead, this ammonia is broken down by bacteria and fungi and returned to the atmosphere as Nitrogen.
Phosphorous Cycle
phosphorous moves in a cycle in our atmosphere via rocks, sediment, soil, water and living organisms. Over a long period of time weathering of rocks leads to phosphate ions and minerals being released into the soil and water. This is absorbed by living organisms who need phosphorous to build nucleic acids such as DNA. Then when these living organisms die, phosphates are released back into the soil.
There are still various other biogeochemical cycles such as water, rock, sulphur etc. The importance of these cycles is that they essentially support all life on the planet because without these cycles living organism would not get all the elements they need to survive.
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Humans have changed the natural carbon cycle by burning fossil fuels, which releases carbon dioxide into the atmosphere. ... The nitrogen cycle begins with nitrogen gas in the atmosphere then goes through nitrogen-fixing microorganisms to plants, animals, decomposers, and into the soil
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