Earth's Biogeochemical Cycles

Biogeochemical cycles are pathways in which a chemical or compound moves through Earth's biosphere, atmosphere, hydrosphere and lithosphere. These reservoirs are all interconnected. In the biosphere, when water evaporates the water moves into the atmosphere in a gas form. Then when it rains that same gas is turned back into water and is put back into the biosphere, where it then ends up in the hydrosphere. Studying cycles together is more important than studying them seperatly is important because by looking at how they converge there is a deeper understanding of the unity between the biosphere, lithosphere, hydrosphere and atmosphere.