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