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Biology A
Community level systems
OCR
J247
Community level systems
Ecosystems
10 Subtopics
1
Material cycling
Revise
2
Role of microorganisms
Revise
3
Carbon and water cycles
Revise
4
Factors affecting decomposition
Revise
5
Levels of organisation
Revise
6
Abiotic and biotic factors
Revise
7
Interdependence and competition
Revise
8
Trophic levels
Revise
9
Pyramids of biomass
Revise
10
Efficiency of biomass transfer
Revise
