🌱
AP Environmental Science
Ecosystems, energy and human impact — interpret data on climate, pollution and biodiversity.
Diagnostic Score calculator Score distribution Math practice Cheatsheet Reference sheet Exam-skill drills Study plan External resources
Scored lab investigations
Unit 1 · 6–8%
The Living World: Ecosystems
Unit 2 · 6–8%
The Living World: Biodiversity
Unit 3 · 10–15%
Populations
- Population Dynamics & Growth13 min · 3 objectives
- Survivorship & Reproductive Strategies12 min · 3 objectives
- Carrying Capacity & Limiting Factors13 min · 3 objectives
- Human Demographics13 min · 3 objectives
- Population Growth: The Two Models and the Rule of 7017 min · 3 objectives
- Age Structure, the Demographic Transition, and Total Fertility Rate17 min · 3 objectives
Unit 4 · 10–15%
Earth Systems & Resources
- Plate Tectonics12 min · 3 objectives
- Soil Formation & Properties13 min · 3 objectives
- Watersheds & Water Resources12 min · 3 objectives
- Atmospheric Circulation & El Niño13 min · 3 objectives
- Soil: Texture, Horizons, and Why It Erodes17 min · 3 objectives
- El Niño, Watersheds, and Global Circulation17 min · 3 objectives
Unit 5 · 10–15%
Land & Water Use
- Agriculture & Feeding the World13 min · 3 objectives
- Mining & Resource Extraction12 min · 3 objectives
- Fishing & Overharvesting12 min · 3 objectives
- Urbanization & Ecological Footprints13 min · 3 objectives
- Irrigation, Salinization, and the Cost of Growing Food17 min · 3 objectives
- Fisheries, Tragedy of the Commons, and Sustainable Yield17 min · 3 objectives
Unit 6 · 10–15%
Energy Resources & Consumption
- Fossil Fuels13 min · 3 objectives
- Nuclear Energy13 min · 3 objectives
- Renewable Energy13 min · 3 objectives
- Energy Efficiency & Conservation12 min · 3 objectives
- Comparing Energy Sources on a Common Set of Criteria17 min · 3 objectives
- Energy Efficiency, Cogeneration, and Where the Energy Goes16 min · 3 objectives
Unit 7 · 7–10%
Atmospheric Pollution
Unit 8 · 7–10%
Aquatic & Terrestrial Pollution
Unit 9 · 15–20%
Global Change
- Stratospheric Ozone Depletion12 min · 3 objectives
- Greenhouse Gases & the Greenhouse Effect13 min · 3 objectives
- Climate Change Impacts13 min · 3 objectives
- Invasive Species & Biodiversity Loss12 min · 3 objectives
- Ozone Depletion and Climate Change: Two Problems, Not One17 min · 3 objectives
- Feedback Loops, Ocean Acidification, and Invasive Species17 min · 3 objectives