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Biology B
Ecosystems and Photosynthesis
Population Ecology
Abiotic and Biotic Factors
Abiotic and Biotic Factors
OCR GCSE Biology B (J257) — Ecosystems and Photosynthesis
What You Need to Know
Explain how abiotic and biotic factors affect communities (environmental conditions, toxins, resource availability, predators, pathogens).
Revision Notes
1
Abiotic and Biotic Factors
20 key terms
Practise with Past Papers
Key Terms & Definitions
Previous Topic: Interdependence in Ecosystems
Rate of Decay
Next Subtopic
Field Investigations
