Combined Science, Biology Paper 2, Topic 7

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  • B7
    • Biodiversity and the effect of human interaction on ecosystems
      • Interdependance
      • Human Population and Growth
        • New Medicine
        • Religions don't approve of Contraception
        • Farmers can Produce more Crops
        • Better Heathcare
      • Waste Management
        • Pollution
          • Air
          • Water
          • Land
          • Greenhouse Effect
            • Global Warming
              • Evidence
        • Land Use
      • Peat Bog Destruction
      • Deforestation
        • Pollution
          • Air
          • Water
          • Land
          • Greenhouse Effect
            • Global Warming
              • Evidence
      • Maintaining Biodiversity
    • Organisation of an ecosystem
      • Predator Prey Graphs
      • Quadrats
      • How Materials are Recycled in an Ecosystem
      • Levels of  Organisation
        • Consumers
        • Producers
        • Decomposers
      • Carbon Cycle
      • Water Cycle
    • Adaptations, interdependence and competition
      • Communities
        • Levels of Organisations In an Ecosystem
          • Stable Communities
      • Stable Communities
      • Interdependance
      • Abiotic factors affecting the abundance & distribution of organisms
        • Moisture Level
        • Temperature
        • Soil pH Content
        • Light Intensity
        • Wind Intensity and Direction
        • Carbon Dioxide Levels (Plants)
        • Soil Mineral Content
        • Oxygen Levels (Aquatic Animals)
        • Biotic Factors
          • Availability of Food
          • New Pathogens
          • New Predetors
          • Out-Competition
      • Biotic Factors
        • Availability of Food
        • New Pathogens
        • New Predetors
        • Out-Competition
      • Competition
        • Plants
          • Light
          • Space
          • Minerals in the Soil
          • Water in the Soil
        • Animals
          • Territory
          • Food
          • Mates
      • Adaptations
        • Extremophiles
          • Deep Sea Volcanic Vents
          • Polar regions
        • Animals
          • Physiological
            • Plants
              • Structural
                • Animals
                  • Physiological
                    • Plants
                      • Structural
                    • Behavioral
              • Behavioral
        • https://www.bbc.com/education/topics/zxxhh39
        • Ecology

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