AP Environmental Science: Practice Questions, Units, and Exam Format
Ecosystems, biodiversity, populations, resources, pollution, and climate. See exactly what is on the exam, unit by unit, and practise it with a tutor that adapts to you.
Exam format
| Section | Questions | Time | Share of score |
|---|---|---|---|
| Section I: Multiple Choice | 80 | 1 hr 30 min | 60% |
| Section II: Free Response | 3 | 1 hr 10 min | 40% |
Units and exam weights
| Unit | Exam weight | Topics covered |
|---|---|---|
| The Living World: Ecosystems | 6 to 8% | Introduction to ecosystems, Terrestrial biomes, Aquatic biomes, The carbon cycle, The nitrogen cycle, The phosphorus cycle |
| The Living World: Biodiversity | 6 to 8% | Introduction to biodiversity, Ecosystem services, Island biogeography, Ecological tolerance, Natural disruptions to ecosystems, Adaptations |
| Populations | 10 to 15% | Generalist and specialist species, K-selected r-selected species, Survivorship curves, Carrying capacity, Population growth and resource availability, Age structure diagrams |
| Earth Systems and Resources | 10 to 15% | Plate tectonics, Soil formation and erosion, Soil composition and properties, Earth's atmosphere, Global wind patterns, Watersheds |
| Land and Water Use | 10 to 15% | The tragedy of the commons, Clearcutting, The Green Revolution, Impacts of agricultural practices, Irrigation methods, Pest control methods |
| Energy Resources and Consumption | 10 to 15% | Renewable and nonrenewable resources, Global energy consumption, Fuel types and uses, Distribution of natural energy resources, Fossil fuels, Nuclear power |
| Atmospheric Pollution | 7 to 10% | Introduction to air pollution, Photochemical smog, Thermal inversion, Atmospheric CO2 and particulates, Indoor air pollutants, Reduction of air pollutants |
| Aquatic and Terrestrial Pollution | 7 to 10% | Sources of pollution, Human impacts on ecosystems, Endocrine disruptors, Human impacts on wetlands and mangroves, Eutrophication, Thermal pollution |
| Global Change | 15 to 20% | Stratospheric ozone depletion, Reducing ozone depletion, The greenhouse effect, Increases in the greenhouse gases, Global climate change, Ocean warming |
How Kalyta teaches AP Environmental Science
Practice that adapts to you, an explanation for every answer, and a full rehearsal before the real thing. You spend your time on the units that move your score instead of the ones you have already got.
- Adaptive practice. Questions are picked around your current level, so you are always working just past what you can already do.
- Every answer explained. See why the right answer is right and why each other choice is wrong, with figures and step by step reasoning.
- An AI tutor you can steer. Ask why something works, ask for another example, or tell it to slow down and teach the idea from the start.
- Full exam rehearsals. Sit the real format under real timing and get a predicted score, so test day feels like something you have already done.
- Progress you can see. Watch your readiness climb unit by unit, and know what is solid before you walk in.
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