<span>In the mantle, heat is transferred as soft rock flows slowly in cycles known as convection currents. convection currents are the currents that are caused due to the process of convection. It is actually one of the three main process of heat transfer. The other two process of heat transfer are conduction and radiation. </span>
Biochemical sedimentary rocks are sedimentary rocks created by the buildup of organic carbon (dead plant debris) in low-oxygen conditions (such as swamps).
When organisms utilize elements dissolved in air or water to develop their tissue, biochemical sedimentary rocks form. The calcareous skeletons of creatures such as corals, mollusks, and foraminifera are used to make most varieties of limestone.
Shells and bodies of submerged creatures are used to build biochemical sedimentary rocks. Chemical components from the water are extracted by living creatures and used to form shells and other body parts. Aragonite, a mineral related to and usually replaced by calcite, and silica are among the constituents.
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