BIOGEOCHEMICAL CYCLE

• Biogeochemical cycle


  Comprehensive and interconnected pathways through which essential elements and substances circulate within our planet's biosphere

  
• Biogeochemical cycles


  • Encompass the movement of elements through both living organisms (biotic) and nonliving components (abiotic) of the environment, including air, water, and soil
• Types of biogeochemical cycles

  • Gaseous cycles
  • Sedimentary cycles
• Gaseous cycles


  Elements primarily exist in the atmosphere in gaseous form or readily convert into gaseous compounds
• Elements involved in gaseous cycles

  • Carbon
  • Nitrogen
  • Oxygen
• Gaseous cycles


  Involve processes such as photosynthesis, respiration, combustion, and atmospheric exchange
• Gaseous cycles


  Play a significant role in regulating atmospheric composition, climate, and the availability of essential elements for living organisms
• Sedimentary cycles


  Elements primarily cycle through Earth's crust, rocks, soil, and bodies of water
• Elements involved in sedimentary cycles

  • Phosphorus
  • Sulfur
• Sedimentary cycles


  Involve processes such as weathering of rocks, erosion, sedimentation, and geological transformations
• Sedimentary cycles


  Slower compared to gaseous cycles and involve the gradual movement of elements through geological processes over long periods
• Sedimentary cycles


  Influence soil fertility, nutrient availability, and the composition of Earth's crust
• Carbon cycle


  Circulation of carbon in nature
• Organic carbon accumulates as fossil fuels, limestone, coral</b>
• Fossil fuels release CO2 in industrial processes
• CO2 fixed as carbonates in oceans
• Oxygen scarcity releases methane gas
• Hydrogen cycle


  Movement and transformation of hydrogen atoms within and between various compounds and reservoirs on Earth
• Hydrogen is an essential element in many environmental cycles and processes due to its involvement in several chemical reactions and its role in sustaining life
• Oxygen cycle


  Biological process which helps in maintaining the oxygen level by moving through three main spheres of the earth: atmosphere, biosphere, and hydrosphere
• Oxygen


  Essential for breathing, combustion, supporting aquatic life, and decomposition of organic waste
• Nitrogen cycle


  Biogeochemical process which transforms the inert nitrogen present in the atmosphere to a more usable form for living organisms
• Nitrogen is vital for cellular components, amino acids, and chlorophyll for photosynthesis
• Phosphorus cycle


  Movement of phosphorus through the Earth's lithosphere, hydrosphere, and biosphere
• Phosphorus cycle


  • Involves weathering, absorption by plants, consumption by animals, decomposition, sedimentation and geological processes, leaching and erosion, and assimilation by microorganisms
• Sulfur cycle


  Movement of sulfur through the Earth's systems, elucidating the workings of a variety of biomolecules
• Water cycle


  Continuous movement of water within the Earth and atmosphere, a complex system that includes many different processes
• The water cycle is crucial for distributing freshwater, regulating climate, and sustaining life on Earth