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The Carbon Cycle

The movement of carbon, in its many forms, between the atmosphere, oceans, biosphere, and geosphere is described by the carbon cycle . This cycle consists of several storage pools of carbon (black text) and the processes by which the various poo
by

Megan Helms

on 20 April 2010

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Transcript of The Carbon Cycle

The Carbon Cycle
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vbdfbdb Carbon is the fourth most abundant element in the universe, and is absolutely essential to life on earth.

Every organism on Earth needs carbon either for structure, energy, or, as in the case of humans, for both.

Carbon is found in forms as diverse as the gas carbon dioxide (CO2), and in solids like limestone (CaCO3), wood, plastic, diamonds, and graphite.






The movement of carbon, in its many forms, between the atmosphere, oceans, biosphere, and geosphere is described by the carbon cycle The Geological Carbon Cycle The geological component of the carbon cycle is where it interacts with the rock cycle in the processes of weathering and dissolution, precipitation of minerals, burial and subduction, and volcanism. In the atmosphere, carbonic acid forms by a reaction with atmospheric carbon dioxide (CO2) and water. As this weakly acidic water reaches the earth as rain, it reacts with minerals at the earth’s surface, slowly dissolving them into their component ions through the process of chemical weathering.

These component ions are carried in surface waters like streams and rivers eventually to the ocean, where they precipitate out as minerals like calcite (CaCO3).

Through continued deposition and burial, this calcite sediment forms the rock called limestone. What is the name of the calcite sediment that forms the rock? Carbon is the ___ most abundant element in the universe?
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