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• CFC’s
• Ozone layer
• Toxic/industrial waste
• Biomes
• Salinity
• Pesticides
• Landfill
• Deforestation
• Soil erosion
• Unusual weather patterns
• Nitrogen
• Ammonia
• Fossil fuels
• Decomposition
• Increased human population
• Industrialization
• Global temperatures
• Ocean currents
• Rising sea levels
• Coastal flooding
• Atmosphere
• Bacteria
• Nitrites


• Phosphate





• Animal waste
• Weathering and erosion
• Chemical fertilizers
• Lithosphere
• Hydrosphere
• Biota
• Biosphere
• Plants
• Animals
• Lakes, rivers, oceans

• Land surface
• CO2
• Decomposer

Global Systems
Instructions | More on the Hexagons Approach

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