Skip to content
Toggle sidebar
Pricing
Log in
Sign up free
Loading…
Home
Subjects
Past papers
Key terms
Pricing
My courses
Select your courses
Loading…
Home
More
Biology
Edexcel GCSE Biology
Ecosystems and Material Cycles
Edexcel GCSE Biology · 1BI0 · Topic 9
Ecosystems and Material Cycles
Paper 2
· 19 notes
Ecosystems
9.1
Levels of Organisation
9.2
Abiotic and Biotic Factors
9.3
Interdependence
9.4
Parasitism and Mutualism
9.5
Field Work Investigation
9.6
Determining Organism Numbers
Energy and Biomass
9.7B
Energy Transfer and Biomass
9.8B
Efficiency of Energy Transfer
Biodiversity and Human Impact
9.9
Human Interactions in Ecosystems
9.10
Maintaining Biodiversity
9.11B
Food Security
Material Cycles
9.12
Cycling of Materials
9.13
Carbon Cycle
9.14
Water Cycle
9.15
Nitrogen Cycle
Pollution and Decay
9.16B
Indicator Species
9.17B
Decomposition in Food Preservation
9.18B
Decomposition in Composting
9.19B
Rate of Decay Calculations
Practise with past papers
Key terms & definitions
