The elements of the Earth undergo chemical reactions that build molecules, destroy molecules, and change molecules into other mo
lecules, reusing the same atoms over and over. These changes occur as atoms and molecules move through organisms, the ground, bodies of water, and the air. What are the patterns of these reactions and movements called?
<em><u>Biogeochemical cycles are cycles through which earth's elements undergo chemical reactions that build molecules, destroy molecules, and change molecules into other molecules, reusing the same atoms over and over.</u></em> These cycles includes a variety of chemical, geological and biological processes.
The major biogeochemical cycles include; water cycle, carbon cycle, nitrogen cycle and oxygen cycle. These cycles function to conserve and recycle matter which is part of living organisms.