There is a carved lime stone head. The surface of the lime stone has changed over many years.Which process made the surface of the limestone change over many years??
Also please tell the word equation for the change that has occured.
Answers
Answer:
Limestone usually starts in the biosphere, gets recycled into the lithosphere or geosphere, moves to the atmosphere then back to the biosphere.
Explanation:
Most limestones actually start as calcium carbonate mud or shells precipitated by organisms in reefs or shallow shelf regions - the biosphere.
Lime mud gets buried by overlying sediments over long periods of time and turns into limestone. Limestone in the oceans gets dragged to subduction zones where it gets recycled into the mantle (geosphere).
Over time, the limestone is broken down into its chemical parts and may come back to the surface as volcanic CO2 (in the atmosphere). From the atmosphere, the CO2 might again become part of the biosphere by molluscs or corals absorbing the CO2 to help make their shells.
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