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AP Exams · Environmental Science · Data and Solutions

AP Environmental Science Practice Test

Build AP Environmental Science readiness with original ecosystem, population, resource, pollution, climate, data, and solution questions.

AP Environmental Science practice sets

This page provides one canonical AP Environmental Science practice hub with five short sets of 10 original questions each. The sets cover ecosystems, biodiversity, populations, Earth systems, land and water use, energy, atmospheric and aquatic pollution, global change, quantitative data, investigations, and environmental solutions.

Skills covered

  • Explain environmental concepts and processes
  • Analyze data, visual representations, maps, models, and written sources
  • Apply quantitative methods and environmental calculations
  • Design or evaluate an investigation and identify variables and evidence
  • Propose a solution to an environmental problem and justify trade-offs

AP Environmental Science course and exam scope

College Board organizes AP Environmental Science into nine units: ecosystems, biodiversity, populations, Earth systems and resources, land and water use, energy resources and consumption, atmospheric pollution, aquatic and terrestrial pollution, and global change.

College Board’s current exam page describes a fully digital Bluebook exam with individual and set-based multiple-choice questions and free-response tasks involving investigation design, quantitative data, calculations, and environmental solutions. Current calculator and reference-information rules can change, so verify them before test day.

How to use this page

Start with one untimed set to identify a topic gap, then use timed sets to build pacing. For every missed item, identify the scale, units, environmental mechanism, and evidence before solving a new similar problem.

These questions are original supplemental practice. They are not official College Board questions, secure AP Exam content, AP Classroom assignments, a score predictor, or a substitute for current AP policies and course materials.

For current scope and preparation, review the AP Environmental Science course page, the AP Central course overview, the AP Environmental Science exam page, the AP Environmental Science Course and Exam Description, and the AP calculator policy.

For more study options, visit AP Exam Tests or explore AP Biology Practice, AP Chemistry Practice, High School Course Tests, and Pomodoro.

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AP Environmental Science Practice Questions

A 10-question AP Environmental Science practice set on ap environmental science: atmospheric, aquatic, and terrestrial pollution, with answers and explanations.

Read the environmental scenario, map, graph, calculation, or investigation carefully. Choose the best answer and review the explanation after each response.

10 Questions
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1. QuestionMultiple choice

What causes photochemical smog?

Please select an answer first.

Correct answer: A

The correct answer is Sunlight-driven reactions involving nitrogen oxides and volatile organic compounds.

  1. Identify the environmental system: Determine whether the AP Environmental Science practice prompt concerns ecosystems, populations, resources, pollution, climate, or a solution.
  2. Apply the concept: Sunlight helps transform precursor pollutants into ozone and other smog components.
  3. Connect evidence and scale: Check the units, trend, environmental mechanism, and scale before stating a conclusion.

Sunlight helps transform precursor pollutants into ozone and other smog components.

2. QuestionMultiple choice

What is acid deposition associated with?

Please select an answer first.

Correct answer: B

The correct answer is Sulfur and nitrogen oxides forming acidic compounds in the atmosphere.

  1. Identify the environmental system: Determine whether the AP Environmental Science practice prompt concerns ecosystems, populations, resources, pollution, climate, or a solution.
  2. Apply the concept: SOx and NOx can form acids that return through precipitation or dry deposition.
  3. Connect evidence and scale: Check the units, trend, environmental mechanism, and scale before stating a conclusion.

SOx and NOx can form acids that return through precipitation or dry deposition.

3. QuestionMultiple choice

What is a primary pollutant?

Please select an answer first.

Correct answer: C

The correct answer is A pollutant emitted directly from a source.

  1. Identify the environmental system: Determine whether the AP Environmental Science practice prompt concerns ecosystems, populations, resources, pollution, climate, or a solution.
  2. Apply the concept: Primary pollutants enter the environment directly, unlike secondary pollutants formed later.
  3. Connect evidence and scale: Check the units, trend, environmental mechanism, and scale before stating a conclusion.

Primary pollutants enter the environment directly, unlike secondary pollutants formed later.

4. QuestionMultiple choice

What can thermal pollution do to aquatic ecosystems?

Please select an answer first.

Correct answer: D

The correct answer is Lower dissolved oxygen as warmer water holds less oxygen.

  1. Identify the environmental system: Determine whether the AP Environmental Science practice prompt concerns ecosystems, populations, resources, pollution, climate, or a solution.
  2. Apply the concept: Warmer water can reduce oxygen solubility and stress aquatic organisms.
  3. Connect evidence and scale: Check the units, trend, environmental mechanism, and scale before stating a conclusion.

Warmer water can reduce oxygen solubility and stress aquatic organisms.

5. QuestionMultiple choice

What is eutrophication often caused by?

Please select an answer first.

Correct answer: A

The correct answer is Excess nutrients entering a water body.

  1. Identify the environmental system: Determine whether the AP Environmental Science practice prompt concerns ecosystems, populations, resources, pollution, climate, or a solution.
  2. Apply the concept: Nutrient enrichment can promote algal growth and oxygen depletion.
  3. Connect evidence and scale: Check the units, trend, environmental mechanism, and scale before stating a conclusion.

Nutrient enrichment can promote algal growth and oxygen depletion.

6. QuestionMultiple choice

What is biomagnification?

Please select an answer first.

Correct answer: B

The correct answer is An increase in pollutant concentration at higher trophic levels.

  1. Identify the environmental system: Determine whether the AP Environmental Science practice prompt concerns ecosystems, populations, resources, pollution, climate, or a solution.
  2. Apply the concept: Persistent pollutants can become more concentrated in organisms higher in food chains.
  3. Connect evidence and scale: Check the units, trend, environmental mechanism, and scale before stating a conclusion.

Persistent pollutants can become more concentrated in organisms higher in food chains.

7. QuestionMultiple choice

Which waste strategy is generally highest in the waste hierarchy?

Please select an answer first.

Correct answer: C

The correct answer is Reduce consumption at the source.

  1. Identify the environmental system: Determine whether the AP Environmental Science practice prompt concerns ecosystems, populations, resources, pollution, climate, or a solution.
  2. Apply the concept: Source reduction prevents waste before recycling or disposal is considered.
  3. Connect evidence and scale: Check the units, trend, environmental mechanism, and scale before stating a conclusion.

Source reduction prevents waste before recycling or disposal is considered.

8. QuestionMultiple choice

What is a point source of water pollution?

Please select an answer first.

Correct answer: D

The correct answer is A single identifiable discharge such as a pipe.

  1. Identify the environmental system: Determine whether the AP Environmental Science practice prompt concerns ecosystems, populations, resources, pollution, climate, or a solution.
  2. Apply the concept: Point sources can be traced to a discrete conveyance.
  3. Connect evidence and scale: Check the units, trend, environmental mechanism, and scale before stating a conclusion.

Point sources can be traced to a discrete conveyance.

9. QuestionMultiple choice

What is an invasive species?

Please select an answer first.

Correct answer: A

The correct answer is A nonnative species that spreads and causes ecological or economic harm.

  1. Identify the environmental system: Determine whether the AP Environmental Science practice prompt concerns ecosystems, populations, resources, pollution, climate, or a solution.
  2. Apply the concept: Invasive species can disrupt communities and outcompete native organisms.
  3. Connect evidence and scale: Check the units, trend, environmental mechanism, and scale before stating a conclusion.

Invasive species can disrupt communities and outcompete native organisms.

10. QuestionMultiple choice

Why are wetlands important?

Please select an answer first.

Correct answer: B

The correct answer is They can store floodwater, filter pollutants, and provide habitat.

  1. Identify the environmental system: Determine whether the AP Environmental Science practice prompt concerns ecosystems, populations, resources, pollution, climate, or a solution.
  2. Apply the concept: Wetlands provide multiple regulating and supporting ecosystem services.
  3. Connect evidence and scale: Check the units, trend, environmental mechanism, and scale before stating a conclusion.

Wetlands provide multiple regulating and supporting ecosystem services.

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Frequently asked questions about AP Environmental Science Practice Tests

What topics are included on this AP Environmental Science practice page?

The page covers ecosystems, biodiversity, populations, Earth systems, land and water use, energy, pollution, global change, data, investigations, and environmental solutions.

Are these official College Board questions?

No. These are original supplemental questions. Use AP Classroom, Bluebook previews, AP Central, and current College Board course materials for official preparation.

Is the AP Environmental Science exam digital?

College Board’s current exam page describes a fully digital exam in Bluebook, but students should verify current administration details before test day.

Can I use a calculator on AP Environmental Science?

Calculators are permitted under current College Board policy, but students should check the latest approved-device and 2027 restrictions.

How should I answer an environmental solution question?

Name a feasible intervention, explain the mechanism, use evidence or calculations, and address relevant trade-offs or unintended effects.