Unit guidesAP Environmental Science

AP Environmental Science: every unit, every topic

9 units · 80 multiple-choice questions (60% of your score) · 3 free-response questions (40%) · exam Thursday, May 13, 2027, 273 days away

Unit 1
The Living World: Ecosystems
11 topics
6–8%of the exam
0live questions
Unit 2
The Living World: Biodiversity
7 topics
6–8%of the exam
0live questions
Unit 3
Populations
9 topics
10–15%of the exam
0live questions
Unit 4
Earth Systems and Resources
9 topics
10–15%of the exam
0live questions
Unit 5
Land and Water Use
17 topics
10–15%of the exam
0live questions
Unit 6
Energy Resources and Consumption
13 topics
10–15%of the exam
0live questions
Unit 7
Atmospheric Pollution
8 topics
7–10%of the exam
0live questions
Unit 8
Aquatic and Terrestrial Pollution
15 topics
7–10%of the exam
0live questions
Unit 9
Global Change
10 topics
15–20%of the exam
0live questions
Receipts

No AP Environmental Science questions are live yet — the unit outlines below are complete, the bank is not. Counts appear here as each unit fills in.

Units, weightings, and topic titles are read from our machine-readable AP Environmental Science course outline, verified against the published course framework on 2026-07-27.

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