Master AP Environmental Science from ecosystems through global change. Flashcards, cheat sheets, essential terms, practice questions, and visual reviews for all 9 units — all completely free.
Each unit has 6 study resources — flashcards, cheat sheet, essential terms, practice questions, visual review, and FRQ practice.
AP Environmental Science (APES) is a college-level interdisciplinary course that blends biology, chemistry, geology, and geography to study how the natural world works and how human activity affects it. The course builds from ecosystems and biodiversity, through populations and Earth's physical systems, to how humans use land, water, and energy — and the pollution and global change that result.
This page covers all 9 units — The Living World: Ecosystems, The Living World: Biodiversity, Populations, Earth Systems & Resources, Land & Water Use, Energy Resources & Consumption, Atmospheric Pollution, Aquatic & Terrestrial Pollution, and Global Change.
Every page on this site is aligned to the College Board's official AP Environmental Science Course and Exam Description and completely free. Use what works for your study style — flashcards for active recall, the cheat sheet for a one-page overview, or practice questions to test yourself before the exam.
Every unit has the same 6 study resources, designed for different learning styles.