Students often underestimate The Living World: Ecosystems because it appears early in the syllabus, but AP questions here test application, not memorized definitions alone.
Ecosystem structure, energy flow, productivity, and biogeochemical cycles. Expect questions involving Ecosystem concepts, food chains/webs, trophic levels; Primary productivity, energy transfer (10% rule); Carbon, nitrogen, phosphorus, and water cycles.
Mix MCQ practice with sketching diagrams or timelines from memory. AP Environmental Science rewards recall under time pressure, not just recognition.
Select Generate above to pull a fresh MCQ for this unit. You can still switch subjects or units if you want to compare topics side by side.