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Earth's Essential Cycles: Carbon, Nitrogen, and Phosphorus Dynamics

Explore the intricate processes of the carbon, nitrogen, and phosphorus cycles that sustain life on our planet. Learn about the key reservoirs, transformations, and impacts on ecosystems.

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Earth's Essential Cycles: Carbon, Nitrogen, and Phosphorus Dynamics

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  1. The Carbon Cycle Reservoir of CO2 in atmosphere (about 0.04%) 5. 3. 1. 2. 4. Time Mining & extraction Fossil fuels

  2. The Carbon Cycle Reservoir of CO2 in atmosphere (about 0.04%) Combustion Respiration Acid rain Photosynthesis Decomposition Time Mining & extraction Fossil fuels

  3. The nitrogen cycle Reservoir of nitrogen (N2) in atmosphere (about 80%) 4. 1. 3. 2. Excessive NO3- & NH4+ in aquatic ecosystems can cause eutrophication. NO3- & NH4+ (from plants and animals) NO3- & NH4+ (later used by plants) Death , decay, & excretion

  4. The nitrogen cycle Reservoir of nitrogen (N2) in atmosphere (about 80%) 4. Industrial fixation 1. Denitrification 3. Atmospheric fixation 2. Biological fixation Excessive NO3- & NH4+ in aquatic ecosystems can cause eutrophication. NO3- & NH4+ (from plants and animals) NO3- & NH4+ (later used by plants) Death , decay, & excretion

  5. The phosphorous cycle (Corn) Excessive phosphates in aquatic ecosystems can cause eutrophication. Detergents & fertilizers Absorption Animal & plant wastes and remains Reservoir in phosphate rocks Biologically active phosphate in soil

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