GCSE›AQA GCSE Biology›Mind mapsEcosystems and InterdependenceAQA GCSE Biology: Mind mapStudy pack PDFAlso for this subtopic:Revision notesFlashcardsSubtopic testCover factsWhat is it?Community of biotic organisms plus abiotic surroundingsAbiotic examples: soil, water, climateLevels: organism, population, community, ecosystemCompetitionPlants: light, space, water, mineral ionsAnimals: food, mates, territoryCompetition can limit population sizeInterdependenceSpecies rely on others for food, shelter, pollinationRemoving one species can affect the whole communityStable community: populations stay fairly constantLosing bees cuts plant reproductionEcosystemsinterdependenceAdaptationsStructural: physical feature, like thick furBehavioural: how it acts, like migrationFunctional: internal process, like antifreeze proteinsExtremophiles live in extreme conditionsFactorsAbiotic: light, temperature, moisture, soil pH, windCO2 level matters for plants; oxygen for aquatic animalsBiotic: food, predators, pathogens, competitorsExam tipsLiving thing or interaction means bioticPhysical or chemical condition means abiotic