AQA GCSE Combined Science: Trilogy, topic 7
Ecology
Ecology is the study of how living things interact with each other and with their environment. It covers communities, food chains, the cycling of materials such as carbon and water, and how human activity affects biodiversity. Triple students also study decomposition, environmental change (Higher), trophic levels, biomass transfer and food production.
Examined in Biology Paper 2 (1 hour 15 minutes, 70 marks). Combined Science: skip anything labelled Triple only.
Revision notes
Worksheet
FlashcardsSubtopics
Work through them in order. Each one has notes, exam questions and flashcards, and a PDF of each. Triple-only subtopics are left out.
- 1Adaptations, interdependence and competition Spec 4.7.1Levels of organisation, competition, interdependence, abiotic and biotic factors, and how organisms are adapted to their environment.NotesQuestions 5Flashcards 14
- 2Organisation of an ecosystem Spec 4.7.2Food chains, sampling with quadrats and transects, predator-prey cycles, the carbon and water cycles, decay and the effect of environmental change.NotesQuestions 8Flashcards 26
- 3Biodiversity and the effect of human interaction on ecosystems Spec 4.7.3What biodiversity is, and how waste, land use, deforestation and global warming reduce it, and how people try to maintain it.NotesQuestions 6Flashcards 15
Not in Combined Science: Trophic levels in an ecosystem, Food production.
Whole topic
When you have done the subtopics: test yourself on everything, or print the lot.