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Curricula
IGCSE
Pearson Edexcel
Biology
4. Ecology & the Environment
4. Ecology & the Environment
1
The Organism in the Environment
1.1
Population, Community, Habitat & Ecosystem
1.2
Practical: Investigating Population Size
1.3
Biodiversity
1.4
Practical: Investigating the Distribution of Organisms
1.5
Abiotic & Biotic Factors
2
Feeding Relationships
2.1
Trophic Levels
2.2
Food chains, Food webs & Pyramids
2.3
Transfers Along a Food Chain
3
Cycles within Ecosystems
3.1
Carbon Cycle
3.2
Nitrogen Cycle
4
Human Influences on the Environment
4.1
Biological Consequences of Air Pollution
4.2
Greenhouse Gases
4.3
Enhanced Greenhouse Effect
4.4
Biological Consequences of Water Pollution
4.5
The Effects of Deforestation
