7 Ecology

Adaptations, interdependence and competition

Abiotic factors

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Biotic factors

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Adaptations

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Organisation of an ecosystem

Levels of organisation

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How materials are cycled

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Decomposition (biology only)

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Impact of environmental change (biology only and HT only)

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Biodiversity and the effect of human interaction on ecosystems

Biodiversity

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Waste management

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Land use

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Deforestation

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Global warming

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Maintaining biodiversity

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Trophic levels in an ecosystem (biology only)

Trophic levels

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Pyramids of biomass

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Transfer of biomass

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Food production (biology only)

Factors affecting food security

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Farming techniques

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Sustainable fisheries

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Role of biotechnology

Fluff