Biology - Ecology - Advanced - Biogeochemical cycles - Key Biogeochemical Cycles
Three sections for major cycles. Section 1: 'CARBON CYCLE - Reservoirs: atmosphere (CO₂), organisms (organic compounds), oceans (dissolved CO₂/carbonates), fossil fuels, rocks. Key processes: photosynthesis removes CO₂ from air, respiration/combustion adds CO₂. Human impact: burning fossils fuels ad