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AP Environmental Science · Flashcards & study tools

AP Environmental Science flashcards, minus the noise.

359 flashcards mapped to the College Board course framework, 89 original practice questions, and 6 FRQ drills with self-scored rubrics — in a calm app with no ads, no games, and no streaks to protect.

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9 unitsFull CED coverage
359 cardsAudited deck
89 practice questionsOriginal writing
6 FRQ drillsSelf-scored rubrics
What’s inside

Everything for the May exam, in one place

Four ways to study, all aligned to the same course framework.

Flashcards

A 359-card deck covering all 9 units, audited against the CED with core and supporting concepts marked so you study what's tested and skip what isn't. Your Still Learning / Know ratings schedule each card with SM-2 spaced repetition.

Vocabulary Check

A definition-first pass over the deck: see the definition, recall the term. Built for the recognition-to-recall ramp the exam rewards.

Practice questions

89 original multiple-choice questions written against the CED — never recycled exam content. Every distractor targets a real misconception, and explanations address the trap.

FRQ drills

Six free-response drills — design an investigation, analyze an environmental problem and propose a solution, including calculations, timed like the exam, with Rycal-written rubrics you score yourself against — plus links to officially released FRQs on AP Central.

Unit by unit

Covered unit by unit

Every unit of the AP Environmental Science framework, each with its own flashcard deck, vocabulary check, and practice questions.

Sample flashcards

A few of the actual cards

Real cards from the AP Environmental Science deck — term on the front, definition on the back.

Biome
A biome contains characteristic communities of plants and animals that result from, and are adapted to, its climate.
Unit 1 · The Living World: Ecosystems
CAFOs
Concentrated animal feeding operations (CAFOs) can be more economically efficient, which lowers costs for consumers. Animals raised in CAFOs are kept in confined spaces and fed grain- and soy-based diets. CAFOs have high concentrations of manure that can contaminate nearby waterways if not properly managed, and routine use of antibiotics in CAFOs can contribute to the global risks of antibiotic resistance.
Unit 5 · Land and Water Use
LD50
Lethal dose 50% (LD50) is the dose of a chemical that is lethal to 50% of the population of a particular species.
Unit 8 · Aquatic and Terrestrial Pollution
Pioneer species
Pioneer members of an early successional species commonly move into unoccupied habitat and over time adapt to its particular conditions, which may result in the origin of new species.
Unit 2 · The Living World: Biodiversity
Eutrophication
Eutrophication occurs when a body of water is enriched in nutrients.
Unit 8 · Aquatic and Terrestrial Pollution
Greenhouse effect
The greenhouse effect results in the surface temperature necessary for life on Earth to exist.
Unit 9 · Global Change
Tragedy of the commons
The tragedy of the commons suggests that individuals will use shared resources in their own self-interest rather than in keeping with the common good, thereby depleting the resources.
Unit 5 · Land and Water Use
Carrying capacity and overshoot
Carrying capacity (denoted K) is the maximum population size an environment can sustain. When a population exceeds its carrying capacity, overshoot occurs, with environmental impacts including resource depletion.
Unit 3 · Populations
Questions

Before you ask

Is Rycal free?

Yes. Everything described on this page is free — no ads, no paywalls, no premium tier. You can study as a guest without an account; a free account saves your progress and syncs it across devices.

Is this official College Board material?

No. Rycal is independent and is not affiliated with or endorsed by the College Board. Our questions and drills are original writing, aligned to the College Board course framework — we never rehost exam content. The FRQ section links out to officially released FRQs on AP Central.

How does the scheduling work?

Rycal uses SM-2 spaced repetition: after each flashcard you rate it Still Learning or Know, and your ratings decide when that card comes back. Add your exam date to the Test Planner and pacing compresses unit by unit as the test approaches — nothing is ever scheduled past test day.

Do I need an account to start?

No. Guests get the study tools. A free account adds sync across devices, the review queue, and the mastery map that shows which units are fragile and which are stable.

Which FRQ types are covered?

Six free-response drills — design an investigation, analyze an environmental problem and propose a solution, including calculations, each with a Rycal-written rubric you score yourself against, plus links to officially released FRQs on AP Central. Rycal never grades your writing.

Calm studying starts here.

Open the AP Environmental Science course in the AP Course Hub and start with the flashcards. Your first review queue builds itself.

Start studying — it’s free