Which process is involved in all nutrient cycles in the biosphere and which sphere of the Earth is responsible for the cycling of nutrients and organic matter?
Biogeochemical cycles refer to the pathways through which elements and compounds, such as carbon, nitrogen, phosphorus, and others, are cycled and recycled between living organisms, the atmosphere, hydrosphere, geosphere, and other Earth reservoirs. The process is regulated by the food web pathways previously presented, which decompose organic matter into inorganic nutrients. Nutrient cycles occur within ecosystems. Nutrient cycles that we will examine in this section include water, carbon, oxygen and nitrogen cycles. The ways in which an element or compound such as water moves between its various living and nonliving forms and locations in the biosphere is biogeochemical cycle. The biosphere is a system characterized by the continuous cycling of matter and an accompanying flow of solar energy in which certain large molecules and cells are self-reproducing. Nutrient cycling involves processes such as decomposition, nitrogen fixation, denitrification, ammonification, respiration, photosynthesis, and transpiration. Nutrients circulate endlessly throughout the environment in complex cycles called biogeochemical cycles, or nutrient cycles. Carbon, oxygen, phosphorus, and nitrogen are nutrients that cycle through all of Earth's spheres and organisms.
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