biogeochemical cycles

Biogeochemical cycle is include the cycles of elements that is important in the environment which is carbon cycle, nitrogen cycle,sulfur cycle, iron cycle and manganese cycle. This is the carbon cycle.

The reduced form is methane and organic matter while the oxidizes form is c02 and c0. The atmospheric c02 is fixed by plants. In carbon cycle the final product for aerobic is accumulation of oxidized product such as h2o while anaerobic of reduced product such as nh4.

In nitrogen cycle there are 3 major process which is nitrification, denitrification and nitrogen fixatiojn. Nitrogen cycle give product of ammonia and must occur in anaerobic condition even in aerobic microorganism.

In sulfur cycle use sulfide as energy sources in sulfur oxidation. While sulfur reduction is reduction of sulfate for the use in amino acid and protein biosynthesis.in mineralization sulfhydryl groups in proteins of dead animals converted to sulfide.

In iron cycle there is oxidation and reduction process..

In manganese cycle , the forms of soil manganese in equilibrium with solution manganese were studied by extracting the soil with ZnSO₄ solution followed by hydroquinone.