Ecosystems and Material Cycles

Ecology, food chains, and nutrient cycles

Practice 53 subtopics in Ecosystems and Material Cycles. All questions match the Edexcel GCSE specification.

About Ecosystems and Material Cycles

Ecosystems and Material Cycles is a key topic in the Edexcel GCSE Biologyspecification. This topic covers ecology, food chains, and nutrient cycles.

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Ecosystems Communities Populations Habitats Niches Abiotic factors Biotic factors Core Practical 8: Sampling Producers Consumers Food chains Food webs Trophic levels Predator-prey relationships Interspecific competition Intraspecific competition Resources competed for Structural adaptations Behavioural adaptations Functional adaptations Extremophiles Pyramids of numbers Pyramids of biomass Pyramids of energy Energy flow in ecosystems Efficiency of energy transfer Energy losses Calculating efficiency Carbon cycle Photosynthesis in carbon cycle Respiration in carbon cycle Decomposition Combustion Fossil fuels Water cycle stages Evaporation Condensation Precipitation Transpiration Nitrogen cycle Nitrogen fixation Nitrification Denitrification Decomposers Biodiversity Importance of biodiversity Threats to biodiversity Deforestation Pollution Global warming Greenhouse effect Conservation Maintaining biodiversity

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Ecosystems and Material Cycles

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