♻️ap environmental science review

Ecosystems

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

Ecosystems are self-sustaining communities of living organisms and their physical environment. They consist of both biotic (living) and abiotic (non-living) components that interact with each other.