← England Environmental Science
England · AQASyllabus
Environmental Science syllabus, dot point by dot point
Every dot point in the England Environmental Sciencesyllabus, with a focused answer for each one. Click any dot point for a worked explainer, past exam questions, and links to related dot points. Written by Claude Opus 4.8, Anthropic's latest AI.
3.5 Biological resources
Module overview →- How do we produce enough food, and how can farming be made more sustainable?The methods used to increase agricultural productivity, the environmental impacts of intensive farming, the differences between intensive and extensive and organic systems, and approaches to sustainable food production.12 min answer →
- Why are fish stocks collapsing, and how can fishing and aquaculture be made sustainable?The exploitation of wild fish stocks, the causes and consequences of overfishing, methods of managing fisheries sustainably, and the role and impacts of aquaculture.12 min answer →
- Why are forests so valuable, what is driving deforestation, and how can forestry be made sustainable?The economic and ecological value of forests, the causes and consequences of deforestation, and the methods used to manage forests sustainably including selective logging and replanting.12 min answer →
3.3 Energy resources
Module overview →- How can we cut energy demand through conservation and efficiency, and why does it matter?The difference between energy conservation and energy efficiency, methods of reducing energy demand in buildings, transport and industry, and the environmental and economic benefits of doing so.11 min answer →
- How did fossil fuels form, why are they so widely used, and what are the environmental costs of burning them?How coal, oil and natural gas form, their extraction and use, why they are non-renewable and finite, and the environmental impacts of extracting and burning fossil fuels.11 min answer →
- How does nuclear power generate electricity, and do its low-carbon benefits outweigh the risks of waste and accidents?How nuclear fission is used to generate electricity, the fuel cycle, the management of radioactive waste, and the advantages and disadvantages of nuclear power including safety and decommissioning.12 min answer →
- What are the main renewable energy resources, and what are the trade-offs between them?The main renewable energy resources (solar, wind, hydroelectric, tidal, wave, geothermal and biomass), how each generates energy, and the advantages and limitations of each.12 min answer →
3.4 Pollution
Module overview →- What are the main air pollutants, where do they come from, and what damage do they cause?The main air pollutants and their sources, the effects of air pollution including acid rain, smog, ozone depletion and the enhanced greenhouse effect, and methods of controlling air pollution.12 min answer →
- What makes something a pollutant, and what properties decide how much harm it does?The definition of pollution, the properties of pollutants that determine their impact (toxicity, persistence, bioaccumulation and biomagnification), and how pollutants are dispersed and degraded in the environment.11 min answer →
- How can pollution be controlled, and what strategies prevent it rather than just cleaning it up?Strategies for controlling pollution including prevention at source, treatment, legislation and economic instruments, the principle of the critical pathway, and the polluter pays principle.11 min answer →
- What happens to our solid waste, and how can we move from disposal to a circular economy?The sources and types of solid waste, methods of waste disposal including landfill and incineration and their impacts, and the waste hierarchy of reduce, reuse and recycle moving towards a circular economy.11 min answer →
- What pollutes our water, and why is eutrophication such a damaging process?The main water pollutants and their sources, the process and consequences of eutrophication, the use of indicator species and biological oxygen demand to monitor water quality, and methods of controlling water pollution.12 min answer →
3.6 Sustainability and research methods
Module overview →- How do we analyse environmental data and decide whether a result is statistically significant?The handling and presentation of environmental data, the use of means, ranges and standard deviation, the choice and use of statistical tests, correlation versus causation, and the evaluation of reliability and validity.12 min answer →
- How do environmental scientists sample populations and monitor the environment reliably?Methods of sampling populations and habitats including quadrats, transects and capture techniques, the importance of random sampling and replication, and the abiotic and biotic factors that are monitored.12 min answer →
- What does sustainability really mean, and how do we balance human needs against environmental limits?The meaning of sustainability and sustainable development, the concepts of ecological footprint and carrying capacity, the difference between renewable and non-renewable resources, and the principles that guide sustainable resource use.12 min answer →
3.1 The living environment
Module overview →- What does biodiversity actually measure, and why does it matter at the genetic, species and habitat levels?The meaning of biodiversity at the genetic, species and habitat levels, how species and habitat diversity are measured and estimated, and the value of biodiversity to humans and ecosystems.12 min answer →
- What conditions made the Earth suitable for life, and how did life change the planet in return?The conditions that allowed life to develop on Earth, the role of liquid water and an oxygen atmosphere, the changing of conditions by living organisms, and the Gaia hypothesis of self-regulation.11 min answer →
- Why is biodiversity declining, and which conservation methods actually work to protect it?The reasons biodiversity should be conserved, the causes of biodiversity loss, and the range of in-situ and ex-situ conservation methods used to protect species and habitats.12 min answer →
- How does energy flow and matter move through the living systems of the biosphere?The flow of energy through ecosystems via food chains and trophic levels, the inefficiency of energy transfer, productivity, and the cycling of matter that supports life in the biosphere.11 min answer →
- How do carbon and nitrogen cycle between organisms, the atmosphere, the oceans and the rocks?The processes that move carbon and nitrogen through the biosphere, atmosphere, hydrosphere and lithosphere, including photosynthesis, respiration, nitrogen fixation, nitrification, denitrification and decomposition.11 min answer →
3.2 The physical environment
Module overview →- How do nutrients and elements cycle through the living and non-living parts of the planet?The general structure of biogeochemical cycles with their stores and fluxes, the phosphorus and sulfur cycles, the role of decomposers, and how human activity alters these cycles.11 min answer →
- How are mineral resources formed, found and extracted, and what are the environmental costs of mining them?How mineral and ore deposits form and are concentrated, methods of exploration and extraction, the concept of ore grade and reserves, and the environmental impacts of mining and ways to reduce them.11 min answer →
- What is soil made of, how does it form, and why is it so easily degraded?The composition and formation of soil, soil horizons and texture, the properties that make a fertile soil, the causes and consequences of soil degradation, and methods of soil conservation.11 min answer →
- What is the atmosphere made of, how is it structured, and how does it regulate the Earth's climate?The composition and layered structure of the atmosphere, the natural greenhouse effect, how the atmosphere distributes heat and drives climate, and the importance of the ozone layer.11 min answer →
- How does water move through the hydrosphere, and why is fresh water such a limited resource?The distribution and stores of water on Earth, the water cycle and the processes that move water between stores, the limited availability of fresh water, and the role of oceans in climate.11 min answer →